ABB / Trumbull ATF37000 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Quantity
ABB / Trumbull ATF37000 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Sourced from the AT Frame family, the ATF37000 is a 225A, 3-pole MCCB designed for heavy-duty commercial applications. It utilizes thermal-magnetic technology for essential circuit protection. This legacy bolt-on breaker installs seamlessly into older Trumbull and GE panelboards, offering a reliable way to maintain existing infrastructure without costly replacements. Rated for 10kAIC at 480VAC, the unit features an interchangeable trip unit for added flexibility. Lugs are not included.Specifications
| Brand | ABB / Trumbull |
|---|---|
| Part Number | ATF37000-R |
| Series | ATF |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Trumbull / GE Legacy Panelboards and Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat equipment is the Trumbull ATF37000 designed to fit?
This 3-pole breaker is engineered for legacy Trumbull and General Electric (GE) panelboards and switchboards that accommodate AT frame bolt-on circuit breakers.
Why is this breaker associated with ABB, GE, and Trumbull?
Trumbull was an early electrical manufacturer acquired by General Electric. GE Industrial Solutions was later acquired by ABB. The ATF37000 is a legacy AT frame breaker that may be branded under any of these names depending on its original manufacturing date.
What protection functions does the thermal-magnetic trip unit provide?
The trip unit delivers standard LI protection, which includes a Long-Time delay for standard overload conditions and an Instantaneous trip response to quickly clear short circuits.
How is the ATF37000 secured inside the electrical enclosure?
It utilizes a bolt-on mounting configuration to attach directly to the panel busbar. The breaker also includes standard mechanical lugs for terminating the load-side wiring.
Can I install this legacy AT frame breaker in a modern ABB panelboard?
This molded case circuit breaker is intended strictly for older Trumbull or GE distribution equipment. You must verify panel compatibility and busbar configuration before attempting to install it in newer enclosures.
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