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ABB / Thomas & Betts LS360400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Bolt-On
ABB / Thomas & Betts
LS360400
Molded Case Circuit Breaker
Brand
ABB / Thomas & Betts
SKU
LS360400
Quantity
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ABB / Thomas & Betts LS360400 - 400A 3 Pole Molded Case Circuit Breaker
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400A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
Description
Operating at 600VAC, this 400A molded case circuit breaker provides essential long-time and instantaneous protection. The unit utilizes an adjustable magnetic trip mechanism. The bolt-on configuration integrates into existing Eaton, Westinghouse, and Thomas & Betts L-Frame panelboards. Facility managers utilize this model to maintain older systems. Rated at 42kAIC at 240V and 30kAIC at 480V, it delivers robust fault clearing capabilities. Standard line and load lugs are included.Specifications
| Brand | ABB / Thomas & Betts |
|---|---|
| Part Number | LS360400-R |
| Series | LS |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | LS |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton L-Frame Panelboards, Westinghouse L-Frame Panelboards, Thomas & Betts L-Frame Panelboards |
| Wire Gauge | (2) 250-500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the LS360400 circuit breaker?
This bolt-on breaker is designed for use in Thomas & Betts L-Frame panelboards. It is also compatible with Eaton and Westinghouse L-Frame panelboards.
What wire sizes are accepted by the lugs on the LS360400?
The factory lugs accept two conductors per phase, ranging from 250 kcmil to 500 kcmil. Ensure proper torque specifications are followed during installation.
Does the LS360400 feature adjustable trip settings?
Yes, this thermal magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Why is this breaker listed under both ABB and Thomas & Betts?
Thomas & Betts was acquired by ABB. Legacy Thomas & Betts molded case circuit breakers, including the LS frame series, are now managed under the ABB brand portfolio.
Is the LS360400 suitable for systems requiring a 25kA short circuit rating at 480VAC?
Yes, this breaker has an interrupting rating of 30kA at 480VAC, making it suitable for systems with a 25kA available fault current at that voltage. It is also rated for 42kA at 240VAC and 22kA at 600VAC.
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