ABB T4N250BW Molded Case Circuit Breaker
- 250A
- 3 Pole
- Panel Mount
Quantity
ABB T4N250BW - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, the 250A T4N250BW delivers robust electronic trip protection. It is part of the legacy ABB SACE Tmax T4 frame group. The panel-mount design integrates into ABB Tmax enclosures and switchboards. For modern replacements, it is superseded by the XT4N 250 Ekip Dip LS/I (catalog 1SDA075363R1). With a 65kAIC rating at 240V, it includes an adjustable LSI trip unit to ensure optimal coordination in complex electrical systems.Specifications
| Brand | ABB |
|---|---|
| Series | T4 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 25kA @ 500VDC, 16kA @ 600VDC |
| Amperage Range | 100-250A |
|---|
| Frame Type | T4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB Tmax Enclosures, Switchboards, Panelboards |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator, Rotary Handle, Mechanical Lugs |
|---|---|
| Accessories | Front Terminals Included, Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CSA, cULus, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | Double Insulated, Positive Operation, Reverse Feed |
Product FAQs
6 answersWhat is the modern replacement for the legacy ABB T4N250BW circuit breaker?
The T4N250BW is part of the legacy SACE Tmax T4 series. It has been superseded by the ABB SACE Tmax XT4N 250 featuring an Ekip Dip LS/I trip unit, available under catalog number 1SDA075363R1.
What does the N in the T4N250BW part number indicate?
The N designates a Normal interrupting capacity within the ABB Tmax T4 frame family. This specific rating delivers 25kAIC at 480VAC and scales up to 65kAIC at 240VAC for commercial and industrial distribution.
Can the trip settings on the T4N250BW be adjusted for system coordination?
Yes, it is equipped with an electronic LSI trip unit. Electricians can adjust the Long-Time, Short-Time, and Instantaneous parameters to achieve precise selective coordination with other protective devices in the system.
How is the T4N250BW secured within an electrical panel?
This breaker utilizes a bolt-on connection for panel-mount installations. Bolt-on mounting provides a highly secure, vibration-resistant connection suitable for heavy-duty switchboards and ABB Tmax enclosures.
Which electrical enclosures are approved for use with the T4N250BW?
This T4 frame molded case circuit breaker is designed to integrate seamlessly into ABB Tmax enclosures, as well as compatible industrial panelboards and switchboards requiring a 250A bolt-on footprint.
Under which safety standards is the T4N250BW evaluated?
This molded case circuit breaker is UL 489 Listed and CSA C22.2 approved for use as a branch circuit protector in commercial and industrial electrical distribution systems.
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