Siemens / ITE ET100-250 Molded Case Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
Quantity
Siemens / ITE ET100-250 - 50A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed to restore aging electrical infrastructure, this 50A, 2-pole molded case circuit breaker provides essential thermal-magnetic protection. It is built to handle commercial and industrial loads with consistent reliability. This unit installs into legacy ITE and Siemens F-frame panelboards, serving as an exact substitute for the F2B050. It eliminates the need for costly retrofits or adapter kits when maintaining older systems.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | ET100-250-R |
| Series | ET100 |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | ITE / Siemens F-Frame Panelboards and Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break, HACR Rated |
Product FAQs
6 answersWhat types of panelboards are compatible with the ET100-250 circuit breaker?
This breaker is designed for installation in legacy ITE and Siemens F-frame panelboards and switchboards.
Can the ET100-250 be used to replace older ITE circuit breakers?
Yes, this unit serves as an exact substitute for the legacy F2B050 circuit breaker, allowing you to maintain older systems without requiring adapter kits.
What type of terminals are provided on the ET100-250, and what wire sizes do they accept?
This breaker comes equipped with standard mechanical lugs that accept 14 to 1/0 AWG copper conductors or 12 to 1/0 AWG aluminum conductors.
How does the ET100-250 mount into the panelboard?
This is a bolt-on circuit breaker, meaning it secures directly to the panelboard bus using bolted connections rather than a plug-in mechanism.
How does the interrupting capacity of the ET100-250 change across different voltage systems?
The interrupting rating scales based on the system voltage. It provides 25kA at 240V AC, drops to 14kA for both 480V AC and 600V AC systems, and offers 10kA for 250V DC applications.
Are the trip settings on the ET100-250 adjustable?
No, this breaker features a thermal magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions, meaning the trip curve cannot be field-adjusted.
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