ABB / Trumbull AT37150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Quantity
ABB / Trumbull AT37150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as a critical safeguard for industrial infrastructure, the AT37150 delivers 150 amps of thermal-magnetic defense. The three-pole configuration manages 600VAC networks. Maintenance teams rely on this exact-fit component to service older Trumbull and GE A-Series panelboards. It serves as a cross-reference for discontinued TFK236150 breakers. With a 10kAIC interrupting capacity at 480VAC, the unit provides dependable fault clearing for commercial facilities.Specifications
| Brand | ABB / Trumbull |
|---|---|
| Part Number | AT37150-R |
| Series | Type AT |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 10kA @ 480VAC, 10kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Trumbull / GE Legacy Panelboards, GE A-Series Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| 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 |
| Accessories | Lugs Not Included |
|---|---|
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhich panelboards are compatible with the AT37150 circuit breaker?
This breaker is designed for use in Trumbull and GE legacy panelboards, as well as GE A-Series panelboards configured for AT frame bolt-on breakers.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory lugs accept both aluminum and copper conductors ranging from 4 AWG to 300 kcmil. Ensure proper torque specifications are followed during installation to maintain a secure connection.
Can the AT37150 be used in DC applications?
Yes, in addition to its AC ratings, this breaker is rated for up to 250VDC applications, making it suitable for specific industrial DC control circuits or legacy DC systems.
Are the trip settings on the AT37150 adjustable for custom coordination?
No, this breaker features a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions. It cannot be adjusted in the field for custom coordination studies.
Is the Trumbull AT37150 the same as the GE AT37150?
Yes, Trumbull is a legacy brand that became part of General Electric, which is now owned by ABB. Breakers marked as Trumbull, GE, or ABB with the AT37150 catalog number are functionally identical AT frame breakers.
How does the AT37150 protect against different types of electrical faults?
It utilizes thermal magnetic trip technology. The thermal element provides delayed protection against sustained overloads to prevent wire overheating, while the magnetic element provides instantaneous tripping during severe short circuits.
How does the AT37150 mount into the panelboard?
This is a bolt-on molded case circuit breaker, requiring bolted connections directly to the panelboard bus. It is not compatible with plug-in style load centers.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.