Zinsco / Sylvania SEH2C150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Quantity
Zinsco / Sylvania SEH2C150 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Maintaining legacy electrical systems requires exact-fit components like the Zinsco SEH2C150. This 150A, two-pole molded case circuit breaker utilizes a standard thermal-magnetic trip unit to protect commercial circuits. The bolt-on configuration ensures a high-retention connection within Sylvania, Challenger, Westinghouse, and Eaton F-Frame panelboards. Contractors can also cross-reference this model to the Eaton FDB2150 for a modern equivalent. It carries a HACR rating.Specifications
| Brand | Zinsco / Sylvania |
|---|---|
| Part Number | SEH2C150-R |
| Series | SHE |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC |
| Frame Type | SHE |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton F-Frame Panelboards, Sylvania Panelboards, Challenger Panelboards, Westinghouse Panelboards |
| Wire Gauge | 4 AWG - 4/0 AWG (Al/Cu) |
| Max Wire | 4/0 AWG |
| Min Wire | 4 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 | Load Side Lugs Included |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersWhich panelboards are compatible with the SEH2C150 circuit breaker?
This bolt-on breaker is designed for use with legacy Sylvania, Challenger, and Westinghouse panelboards. It is also compatible with Eaton F-Frame panelboards, allowing it to fit into existing enclosures without requiring special adapters.
What wire size is accepted by the lugs on the SEH2C150?
The terminal lugs on this breaker accept aluminum or copper (Al/Cu) wire ranging from 4 AWG to 4/0 AWG. Ensure proper torque specifications are followed during installation to maintain a secure connection.
What is the interrupting capacity (AIC) of this breaker at different voltages?
The SEH2C150 provides an interrupting rating of 18kA at 240VAC and 14kA at 480VAC. Always verify that these ratings meet or exceed the available fault current at your specific installation point to ensure safe operation.
Can this breaker replace older Zinsco or GTE Sylvania SEH frame breakers?
Yes, the SEH2C150 is a direct replacement for legacy 150A, 2-pole SEH frame breakers manufactured under the Zinsco, GTE Sylvania, and Challenger brands. It shares the same physical dimensions and bolt-on mounting configuration.
How does the SEH2C150 mount into the panelboard?
This is a bolt-on molded case circuit breaker. It secures directly to the panelboard bus using bolted connections, providing a robust and reliable mechanical and electrical joint suitable for commercial and industrial applications.
Are the trip settings on the SEH2C150 adjustable?
No, this breaker features a non-interchangeable thermal-magnetic trip unit with fixed thermal (long-time) and fixed magnetic (instantaneous) settings. It is factory-calibrated for 150A overcurrent and short-circuit protection and cannot be field-adjusted.
What type of protection does the thermal-magnetic trip unit provide?
The thermal-magnetic trip unit (LI) provides two types of protection. The thermal element responds to sustained overloads (Long-Time) to prevent wire overheating, while the magnetic element responds immediately to short circuits (Instantaneous) to minimize equipment damage.
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