Siemens / ITE ET100-370 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE ET100-370 - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Operating as a reliable safeguard for commercial facilities, this 70A MCCB utilizes thermal-magnetic technology. The 3-pole unit handles demanding electrical loads while providing instantaneous and long-time protection. Designed to restore older systems, the bolt-on breaker installs into legacy ITE and Siemens F-frame switchboards. It acts as a direct substitute for the FXD63B070, eliminating the need for complex panel modifications. This legacy device is rated for 25 kAIC at 240VAC.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | ET100-370-R |
| Series | ET100 |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| 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 | 4-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Trip-Free Mechanism, Quick-Make/Quick-Break, HACR Rated |
Product FAQs
5 answersWhat type of panelboards will accept the ET100-370 circuit breaker?
This bolt-on breaker is specifically designed for installation in legacy ITE and Siemens F-Frame panelboards and switchboards.
What are the direct replacements or cross-references for the ET100-370?
The ET100-370 serves as an exact cross-reference and direct substitute for the Siemens FXD63B070 and F3B070 circuit breakers, eliminating the need for complex panel modifications.
What wire sizes and materials are accepted by the lugs on the ET100-370?
The breaker's terminals are rated for both copper and aluminum conductors, accommodating wire gauges from 4 AWG up to 1/0 AWG.
Can the ET100-370 be used in DC electrical systems?
Yes, in addition to its standard AC ratings, this breaker is rated for up to 250VDC applications with an interrupting capacity of 10kA.
How does the trip unit function on the ET100-370?
It utilizes a fixed thermal-magnetic trip unit, providing long-time thermal protection against overloads and instantaneous magnetic protection against short circuits.
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