Zinsco R38 RC38 twin 2 pole 40 Amp 120 V Circuit Breaker AK

Description:

The Zinsco R38 / RC38 is a twin 2-pole 40 amp circuit breaker designed for residential and light commercial electrical distribution systems. It provides overcurrent protection for 120/240V circuits and is commonly installed in Zinsco panelboards. This breaker allows efficient use of panel space while protecting wiring and equipment from overload and short circuit conditions. Electricians use this breaker for maintenance, panel upgrades, and replacement of legacy Zinsco components.

Applications:

The Zinsco twin 2-pole circuit breakers are commonly used in residential and light commercial electrical panels where reliable overcurrent protection and space efficiency are required. Typical applications include branch circuit protection, panelboard upgrades, and electrical distribution systems where legacy Zinsco panels are still in service.

Technical Specifications:

• Manufacturer Part Number (MPN): R38 / RC38 / RC38-40
• Brand: Zinsco
• Product Type: Tandem / Twin Circuit Breaker
• Amperage: 40A
• Voltage Rating: 120/240V
• Poles: 2-Pole
• Mounting Type: Plug-in (panel mount)
• Protection Type: Thermal-magnetic (overload + short circuit)
• Configuration: Twin breaker (two circuits in one slot)
• Application: Branch circuit protection
• Compatibility: Zinsco / Sylvania panelboards
• Status: Discontinued / legacy equipment

Common Replacements:

• Connecticut Electric UBIZ0240
• Siemens Q240 (panel dependent)
• Eaton BR240 (panel dependent)