Universal 71637 - Revision history

PowerPig at 20:13, 13 September 2026

2026-09-13T20:13:15Z

PowerPig at 20:11, 13 September 2026

2026-09-13T20:11:17Z

← Older revision		Revision as of 20:11, 13 September 2026
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	The Universal 71637 enclosure is secured by seven Phillips-head screws located on the underside of the housing.		The Universal 71637 enclosure is secured by seven Phillips-head screws located on the underside of the housing.

	After removal of the screws, the enclosure separates into upper and lower shell halves. Internal construction consists primarily of stamped brass outlet bus bars, a ~~small~~ surge-suppression circuit board, telephone line protection circuitry, and a resettable ~~illuminated~~ circuit breaker / power switch assembly.		After removal of the screws, the enclosure separates into upper and lower shell halves. Internal construction consists primarily of stamped brass outlet bus bars, a dedicated surge suppression circuit board, telephone line protection circuitry, and an illuminated resettable circuit breaker / power switch assembly.

	The AC outlets are ~~connected~~ using continuous brass bus bars rather than individual wires. ~~Internal wiring between the surge~~ protection circuitry ~~and outlet bus structure~~ is ~~limited, resulting in~~ a ~~relatively simple~~ and ~~compact construction~~.		The AC outlets are interconnected using continuous stamped brass bus bars rather than individual wires. Telephone protection circuitry is located on a separate board adjacent to the RJ11 input and output jacks.

	The ~~unit~~ was found to be clean internally with no evidence of overheating, ~~carbon tracking~~, or ~~component~~ failure.		The specimen documented by OldSurge was found to be clean internally with no evidence of overheating, arcing, melted components, surge-related damage, or previous repair attempts.

			=== Internal Components ===

			* Seven-screw enclosure construction
			* Stamped brass outlet bus bars
			* Dedicated AC surge suppression circuit board
			* Dedicated telephone line protection circuit board
			* EPCB04000 fuse protecting telephone line circuitry
			* Illuminated resettable circuit breaker / power switch
			* Dual-orientation wall-mount provisions
			* No evidence of internal heat damage or electrical failure

			=== Teardown Gallery ===

	<gallery mode="packed" heights="250">		<gallery mode="packed" heights="250">
	File:Surge_Universal_71637_1998_Screws_01.jpg\|Seven screws secure the enclosure halves.		File:Surge_Universal_71637_1998_Screws_01.jpg\|Seven Phillips-head screws secure the enclosure halves.

	File:Surge_Universal_71637_1998_Interior_01.jpg\|Overall internal construction after opening the enclosure.		File:Surge_Universal_71637_1998_Interior_01.jpg\|Overall internal construction after opening the enclosure.
	File:Surge_Universal_71637_1998_Interior_02.jpg\|Interior view of the molded enclosure structure and ~~mounting provisions~~.
			File:Surge_Universal_71637_1998_Interior_02.jpg\|Interior view of the upper housing showing molded supports and wall-mount provisions.

			File:Surge_Universal_71637_1998_Interior_03.jpg\|Lower enclosure details and one of the dual-orientation wall-mount keyhole slots.

			File:Surge_Universal_71637_1998_Interior_04.jpg\|Rear view of the telephone line protection board showing the EPCB04000 fuse and surge protection components.

			File:Surge_Universal_71637_1998_Interior_05.jpg\|Stamped brass outlet bus bars and power distribution jumpers.

			File:Surge_Universal_71637_1998_Interior_06.jpg\|Underside of the main surge suppression board and illuminated circuit breaker assembly.

			File:Surge_Universal_71637_1998_Interior_07.jpg\|View through the outlet bus structure toward the main surge suppression board.

			File:Surge_Universal_71637_1998_Interior_08.jpg\|Close-up of the main surge suppression board and heavy-current connections.
	</gallery>		</gallery>

PowerPig at 19:59, 13 September 2026

2026-09-13T19:59:19Z

@@ Line 50: / Line 50: @@
 The Universal 71637 incorporates a "Power Shut Down Protection" feature. According to the product labeling, once the surge suppression components have absorbed their protective capacity, the device will stop conducting power rather than continue operation without protection.
 == Physical Description ==
@@ Line 72: / Line 70: @@
 The unit is rated as a UL Listed Relocatable Power Tap and carries a UL 1449 suppressed voltage rating of 330 volts.
 == Gallery ==

PowerPig at 19:53, 13 September 2026

2026-09-13T19:53:36Z

← Older revision		Revision as of 19:53, 13 September 2026
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	* Country of Manufacture: China		* Country of Manufacture: China
	* Year: 1998		* Year: 1998
			* Weight: Approximately 1 lb 3.7 oz (560 g)
			* Length: Approximately 7.75 in (19.7 cm)
			* Width: Approximately 3.5 in (8.9 cm)
			* Height:
			** Approximately 1.5 in (3.8 cm) at the raised switch section
			** Approximately 1.19 in (3.0 cm) at the outlet section

	== Overview ==		== Overview ==
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	The Universal 71637 incorporates a "Power Shut Down Protection" feature. According to the product labeling, once the surge suppression components have absorbed their protective capacity, the device will stop conducting power rather than continue operation without protection.		The Universal 71637 incorporates a "Power Shut Down Protection" feature. According to the product labeling, once the surge suppression components have absorbed their protective capacity, the device will stop conducting power rather than continue operation without protection.

			== Physical Description ==

	== Physical Description ==		== Physical Description ==

	The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding.		The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding.

			The unit measures approximately 7.75 inches long by 3.5 inches wide. The housing height tapers from approximately 1.5 inches at the switch section to approximately 1.19 inches at the outlet section.

	An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.		An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.

	The underside of the enclosure incorporates two sets of keyhole mounting slots, allowing the unit to be mounted either horizontally or vertically on a wall or other flat surface.		The underside of the enclosure incorporates two sets of keyhole mounting slots arranged at 90 degrees to one another, allowing the unit to be mounted either horizontally or vertically on a wall or other flat surface.

			The documented example weighs approximately 1 pound 3.7 ounces including the attached power cord.

	== Notable Features ==		== Notable Features ==
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	File:Surge_Universal_71637_1998_Cable_01.jpg\|Power cord markings showing UL and CSA approvals and SJT construction details.		File:Surge_Universal_71637_1998_Cable_01.jpg\|Power cord markings showing UL and CSA approvals and SJT construction details.
	File:Surge_Universal_71637_1998_Cable_02.jpg\|Additional view of the 14/3 SJT power cord markings.		File:Surge_Universal_71637_1998_Cable_02.jpg\|Additional view of the 14/3 SJT power cord markings.
			File:Surge_Universal_71637_1998_Weight_01.jpg\|Weight measurement showing approximately 1 lb 3.7 oz.
			File:Surge_Universal_71637_1998_BeforeCleaning_01.jpg\|Condition as found before cleaning and documentation.
	</gallery>		</gallery>

PowerPig at 19:48, 13 September 2026

2026-09-13T19:48:43Z

← Older revision		Revision as of 19:48, 13 September 2026
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	* UL 1449 Suppressed Voltage Rating: 330 Volts		* UL 1449 Suppressed Voltage Rating: 330 Volts
	* Protection Modes:		* Protection Modes:
	** Line to Neutral (L-N)		** Line-to-Neutral (L-N)
	** Line to Ground (L-G)		** Line-to-Ground (L-G)
	** Neutral to Ground (N-G)		** Neutral-to-Ground (N-G)
	* Telephone Protection: RJ11 In/Out (4-conductor)		* Telephone Protection: RJ11 In/Out (4-conductor)
	* Cord Length: Approximately 6 feet		* Cord Length: Approximately 6 feet
			* Cord Type: 14/3 SJT
			* Cord Construction: SJT 14/3, 75°C
	* Plug Type: NEMA 5-15P		* Plug Type: NEMA 5-15P
	* Country of Manufacture: China		* Country of Manufacture: China
Line 45:		Line 47:
	== Physical Description ==		== Physical Description ==

	The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding. An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.		The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding.

			An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.

			The underside of the enclosure incorporates two sets of keyhole mounting slots, allowing the unit to be mounted either horizontally or vertically on a wall or other flat surface.

	== Notable Features ==		== Notable Features ==
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	File:Surge_Universal_71637_1998_TopEnd_01.jpg\|Rear view showing the power cord entry point.		File:Surge_Universal_71637_1998_TopEnd_01.jpg\|Rear view showing the power cord entry point.
	File:Surge_Universal_71637_1998_Bottomoverview_01.jpg\|Underside view showing specifications and mounting provisions.		File:Surge_Universal_71637_1998_Bottomoverview_01.jpg\|Underside view showing specifications and mounting provisions.
	File:Surge_Universal_71637_1998_Bottom_02.jpg\|UL ~~listed relocatable power tap~~ certification label.		File:Surge_Universal_71637_1998_Bottom_02.jpg\|UL Listed Relocatable Power Tap certification label.
	File:Surge_Universal_71637_1998_Bottom_03.jpg\|Underside specifications and safety information.		File:Surge_Universal_71637_1998_Bottom_03.jpg\|Underside specifications and safety information.
	File:Surge_Universal_71637_1998_Bottom_04.jpg\|Power Shut Down Protection feature description.		File:Surge_Universal_71637_1998_Bottom_04.jpg\|Power Shut Down Protection feature description.
	File:Surge_Universal_71637_1998_Bottom_05.jpg\|Model and electrical specifications molded into the underside of the housing.		File:Surge_Universal_71637_1998_Bottom_05.jpg\|Model and electrical specifications molded into the underside of the housing.
	File:Surge_Universal_71637_1998_Plug_01.jpg\|Grounded NEMA 5-15P plug.		File:Surge_Universal_71637_1998_Plug_01.jpg\|Grounded NEMA 5-15P plug.
			File:Surge_Universal_71637_1998_Plug_02.jpg\|Close-up of the grounded NEMA 5-15P plug showing molded approval markings.
			File:Surge_Universal_71637_1998_Cable_01.jpg\|Power cord markings showing UL and CSA approvals and SJT construction details.
			File:Surge_Universal_71637_1998_Cable_02.jpg\|Additional view of the 14/3 SJT power cord markings.
	</gallery>		</gallery>

PowerPig at 19:44, 13 September 2026

2026-09-13T19:44:35Z

← Older revision		Revision as of 19:44, 13 September 2026
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	* Frequency: 60 Hz		* Frequency: 60 Hz
	* Maximum Load: 1875 Watts		* Maximum Load: 1875 Watts
	* Suppressed Voltage Rating: 330 Volts		* UL 1449 Suppressed Voltage Rating: 330 Volts
	* Protection Modes: L-N, L-G, N-G		* Protection Modes:
	* Telephone Protection: RJ11 In/Out		** Line to Neutral (L-N)
			** Line to Ground (L-G)
			** Neutral to Ground (N-G)
			* Telephone Protection: RJ11 In/Out (4-conductor)
	* Cord Length: Approximately 6 feet		* Cord Length: Approximately 6 feet
			* Plug Type: NEMA 5-15P
	* Country of Manufacture: China		* Country of Manufacture: China
	* Year: 1998		* Year: 1998
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	The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding. An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.		The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding. An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.

			== Notable Features ==

			The Universal 71637 incorporates a "Power Shut Down Protection" feature. According to the product labeling, the unit will stop conducting power after its surge suppression components have reached the end of their protective life. This design prevents continued operation without surge protection.

			The underside of the enclosure includes integrated keyhole mounting slots for wall installation.

			The unit is rated as a UL Listed Relocatable Power Tap and carries a UL 1449 suppressed voltage rating of 330 volts.

	== Gallery ==		== Gallery ==
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	File:Surge_Universal_71637_1998_Bottom_02.jpg\|UL listed relocatable power tap certification label.		File:Surge_Universal_71637_1998_Bottom_02.jpg\|UL listed relocatable power tap certification label.
	File:Surge_Universal_71637_1998_Bottom_03.jpg\|Underside specifications and safety information.		File:Surge_Universal_71637_1998_Bottom_03.jpg\|Underside specifications and safety information.
			File:Surge_Universal_71637_1998_Bottom_04.jpg\|Power Shut Down Protection feature description.
			File:Surge_Universal_71637_1998_Bottom_05.jpg\|Model and electrical specifications molded into the underside of the housing.
			File:Surge_Universal_71637_1998_Plug_01.jpg\|Grounded NEMA 5-15P plug.
	</gallery>		</gallery>

PowerPig at 19:37, 13 September 2026

2026-09-13T19:37:34Z

← Older revision		Revision as of 19:37, 13 September 2026
Line 9:		Line 9:
	* Six AC outlets		* Six AC outlets
	* Illuminated resettable circuit breaker / power switch		* Illuminated resettable circuit breaker / power switch
	* Protection status indicator
	* Tested and operational
	* Protection status indicator		* Protection status indicator
	* Telephone line surge protection (RJ11 In/Out, 4-conductor)		* Telephone line surge protection (RJ11 In/Out, 4-conductor)
			* Approximately 6-foot attached power cord
	* Grounded three-prong power plug		* Grounded three-prong power plug
	* ~~Attached power cord~~		* Keyhole wall-mount slots
	* ~~Cable length~~: ~~About~~ 6 feet		* UL 1449 surge suppression
			* Power Shut Down Protection

			== Specifications ==

			* Model: 71637
			* Voltage Rating: 125 VAC
			* Current Rating: 15 Amps
			* Frequency: 60 Hz
			* Maximum Load: 1875 Watts
			* Suppressed Voltage Rating: 330 Volts
			* Protection Modes: L-N, L-G, N-G
			* Telephone Protection: RJ11 In/Out
			* Cord Length: Approximately 6 feet
			* Country of Manufacture: China
			* Year: 1998

	== Overview ==		== Overview ==
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	The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.		The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.

			The Universal 71637 incorporates a "Power Shut Down Protection" feature. According to the product labeling, once the surge suppression components have absorbed their protective capacity, the device will stop conducting power rather than continue operation without protection.

	== Physical Description ==		== Physical Description ==
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	File:Surge_Universal_71637_1998_Side_02.jpg\|Left-side profile view with attached power cord.		File:Surge_Universal_71637_1998_Side_02.jpg\|Left-side profile view with attached power cord.
	File:Surge_Universal_71637_1998_TopEnd_01.jpg\|Rear view showing the power cord entry point.		File:Surge_Universal_71637_1998_TopEnd_01.jpg\|Rear view showing the power cord entry point.
			File:Surge_Universal_71637_1998_Bottomoverview_01.jpg\|Underside view showing specifications and mounting provisions.
			File:Surge_Universal_71637_1998_Bottom_02.jpg\|UL listed relocatable power tap certification label.
			File:Surge_Universal_71637_1998_Bottom_03.jpg\|Underside specifications and safety information.
	</gallery>		</gallery>

PowerPig at 19:32, 13 September 2026

2026-09-13T19:32:11Z

← Older revision		Revision as of 19:32, 13 September 2026
Line 22:		Line 22:

	The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.		The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.

			== Physical Description ==

			The Universal 71637 features a two-level stepped housing finished in off-white plastic. A raised section at one end contains the illuminated resettable circuit breaker / power switch, protection indicator, and product branding. An attached power cord approximately six feet in length provides flexibility for placement around desks and computer workstations.

	== Gallery ==		== Gallery ==
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	File:Surge_Universal_71637_1998_PowerSwitchIlluminated_01.jpg\|Illuminated power switch and protection indicator.		File:Surge_Universal_71637_1998_PowerSwitchIlluminated_01.jpg\|Illuminated power switch and protection indicator.
	File:Surge_Universal_71637_1998_Tested_01.jpg\|Outlet test showing correct wiring and operation.		File:Surge_Universal_71637_1998_Tested_01.jpg\|Outlet test showing correct wiring and operation.
			File:Surge_Universal_71637_1998_Side_01.jpg\|Right-side profile view.
			File:Surge_Universal_71637_1998_Side_02.jpg\|Left-side profile view with attached power cord.
			File:Surge_Universal_71637_1998_TopEnd_01.jpg\|Rear view showing the power cord entry point.
	</gallery>		</gallery>

PowerPig at 19:27, 13 September 2026

2026-09-13T19:27:13Z

← Older revision		Revision as of 19:27, 13 September 2026
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	== Gallery ==		== Gallery ==

	<gallery>		<gallery mode="packed" heights="250">
	File:Surge_Universal_71637_1998_Main_01.jpg\|Universal 71637 six-outlet surge protector.		File:Surge_Universal_71637_1998_Main_01.jpg\|Universal 71637 six-outlet surge protector.
	File:Surge_Universal_71637_1998_Outlets_01.jpg\|Close-up of the six AC outlets.		File:Surge_Universal_71637_1998_Outlets_01.jpg\|Close-up of the six AC outlets.

PowerPig at 19:26, 13 September 2026

2026-09-13T19:26:45Z

← Older revision		Revision as of 19:26, 13 September 2026
Line 9:		Line 9:
	* Six AC outlets		* Six AC outlets
	* Illuminated resettable circuit breaker / power switch		* Illuminated resettable circuit breaker / power switch
			* Protection status indicator
			* Tested and operational
	* Protection status indicator		* Protection status indicator
	* Telephone line surge protection (RJ11 In/Out, 4-conductor)		* Telephone line surge protection (RJ11 In/Out, 4-conductor)
	* Grounded three-prong power plug		* Grounded three-prong power plug
	* Attached power cord		* Attached power cord
			* Cable length: About 6 feet

	== Overview ==		== Overview ==

	The Universal 71637 was marketed for protection of personal computers and related office equipment. In addition to protecting connected AC-powered devices, the unit provides surge protection for telephone lines used by modems, fax machines, and telephones.		The Universal 71637 was marketed for protection of personal computers and related office equipment. In addition to protecting connected AC-powered devices, the unit provides surge protection for telephone lines used by modems, fax machines, and telephones. The example documented by OldSurge was tested and found to be operational, with all outlets indicating correct wiring when checked with a receptacle tester.

	The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.		The built-in "Protection Indicator" lamp provides a visual indication that surge protection circuitry is operational.
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	== Gallery ==		== Gallery ==

	<gallery ~~mode="packed" heights="250"~~>		<gallery>
	File:Surge_Universal_71637_1998_Main_01.jpg\|Universal 71637 six-outlet surge protector.		File:Surge_Universal_71637_1998_Main_01.jpg\|Universal 71637 six-outlet surge protector.
	File:Surge_Universal_71637_1998_Outlets_01.jpg\|Close-up of the six AC outlets.		File:Surge_Universal_71637_1998_Outlets_01.jpg\|Close-up of the six AC outlets.
	File:Surge_Universal_71637_1998_Bottom_01.jpg\|Integrated RJ11 telephone line surge protection ports.		File:Surge_Universal_71637_1998_Bottom_01.jpg\|Integrated RJ11 telephone line surge protection ports.
			File:Surge_Universal_71637_1998_top_01.jpg\|Top section showing the Universal branding and control panel.
			File:Surge_Universal_71637_1998_PowerSwitchIlluminated_01.jpg\|Illuminated power switch and protection indicator.
			File:Surge_Universal_71637_1998_Tested_01.jpg\|Outlet test showing correct wiring and operation.
	</gallery>		</gallery>