ABB / Trumbull ATT337150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Quantity
ABB / Trumbull ATT337150 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in replacement for older Trumbull switchboards and GE panelboards, the ABB ATT337150 restores power to aging systems. This 2-pole, 150A molded case circuit breaker is engineered for commercial environments requiring heavy-duty performance. It installs into existing bolt-on enclosures without custom adapters. Officially replaced by the TED124150 for newer setups, this legacy unit is rated 30 kAIC at 480VAC and utilizes fixed thermal-magnetic trip units for consistent LI protection.Specifications
| Brand | ABB / Trumbull |
|---|---|
| Part Number | ATT337150-R |
| Series | ATT |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Trumbull Switchboards, GE Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Common Trip, Interchangeable Trip Unit |
Product FAQs
6 answersWhich panelboards and switchboards are compatible with the ATT337150?
This legacy AT frame breaker is designed for direct installation into older Trumbull switchboards and General Electric (GE) panelboards that accept bolt-on molded case circuit breakers.
Is there a modern replacement for the legacy ATT337150 circuit breaker?
Yes, the GE TED124150 is commonly used as the modern replacement for this 2-pole, 150A breaker in newer setups. Always verify physical dimensions and mounting requirements for your specific enclosure before retrofitting.
What wire sizes are accepted by the lugs on the ATT337150?
The factory lugs on this breaker accept wire gauges ranging from 4 AWG up to 300 kcmil. Ensure proper torque specifications are followed during installation to prevent terminal failure.
Are the trip settings adjustable on the ATT337150?
No, this breaker features a fixed thermal-magnetic trip unit providing Long-Time and Instantaneous (LI) protection. Both the thermal and magnetic trip settings are factory-set and cannot be adjusted in the field.
Can the ATT337150 be used in DC electrical systems?
Yes, this breaker is rated for use in DC applications up to 250VDC, where it provides a 10kA interrupting capacity.
How does the ATT337150 mount into the panelboard?
This breaker utilizes a bolt-on connection, requiring it to be securely bolted directly to the busbar of compatible Trumbull or GE enclosures. It does not use a plug-on mounting system.
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