Zinsco / Sylvania SEH3C100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Quantity
Zinsco / Sylvania SEH3C100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Maintaining aging infrastructure is simple with the Zinsco SEH3C100. This 100A, 3-pole molded case circuit breaker restores functionality in legacy Sylvania and Challenger panels. The bolt-on design ensures a secure fit without custom adapters. For future upgrades, this breaker is officially replaced by the Eaton EHD3100 series. Featuring fixed thermal and magnetic trip elements, it provides 14kAIC of interrupting capacity at 480VAC. The unit delivers robust fault protection.Specifications
| Brand | Zinsco / Sylvania |
|---|---|
| Part Number | SEH3C100-R |
| Series | SEH |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC |
| Frame Type | SEH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Sylvania Panelboards, Challenger Panelboards, Westinghouse Panelboards, Eaton Panelboards |
| Wire Gauge | 14 AWG - 1/0 AWG (Al/Cu) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
8 answersWhich panelboards are compatible with the SEH3C100 circuit breaker?
This breaker is designed to bolt directly into legacy Sylvania, Challenger, and Westinghouse panelboards without the need for custom adapters. It is also compatible with Eaton F-Frame systems.
Is there a modern replacement for the Sylvania SEH3C100?
Yes, the Eaton EHD3100 series serves as a direct cross-reference and modern replacement for this legacy SEH frame breaker.
Why is this breaker listed under multiple brands like Zinsco, Sylvania, and Challenger?
Due to historical acquisitions, the SEH frame was manufactured and branded by Zinsco, Sylvania, Challenger, and Westinghouse over its production lifespan. The SEH3C100 part number remains consistent across these legacy brands.
What wire sizes and materials are accepted by the lugs on this breaker?
The included load-side lugs accept wire gauges ranging from 14 AWG up to 1/0 AWG, and are rated for both aluminum and copper (Al/Cu) conductors.
Are the thermal and magnetic trip settings adjustable on the SEH3C100?
No, this breaker features fixed long-time (thermal) and fixed instantaneous (magnetic) trip functions. They cannot be adjusted in the field.
What is the operating temperature rating for the SEH3C100?
This breaker is calibrated for continuous operation in environments up to 40 degrees Celsius.
Is the SEH3C100 HACR rated?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
What are the physical dimensions of the SEH3C100 frame?
The 3-pole SEH frame measures approximately 4.13 inches wide, 6.31 inches long, and 3.38 inches deep.
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