Eaton / Cutler-Hammer KS360400D Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer KS360400D - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy Series C family, this K-frame molded case circuit breaker delivers 400 amps of thermal-magnetic protection for industrial applications. It installs into Eaton switchboards and motor control centers requiring unit-mount configurations. While officially superseded by the KD3400, this exact match component maintains original system certifications without retrofitting. It features an adjustable magnetic trip and carries a 30kAIC rating at 480VAC for robust fault clearing.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | KS360400D |
| Series | KS |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | KS |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG - 250 kcmil (Al/Cu) or (1) 500-750 kcmil (Al/Cu) |
| Max Wire | 750 kcmil |
| Min Wire | 3/0 AWG |
| 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, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhat equipment is the KS360400D designed to be installed in?
This breaker is compatible with Eaton Series C panelboards, switchboards, and motor control centers.
What wire sizes are accepted by the standard lugs on this breaker?
The standard lugs accept either two 3/0 AWG to 250 kcmil conductors or one 500 to 750 kcmil conductor. They are rated for both aluminum and copper wire.
How is the trip unit configured on the KS360400D?
It features a thermal-magnetic trip unit with fixed thermal protection for long-time overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
How does this breaker mount into an enclosure?
It is a unit mount, bolt-on circuit breaker designed to be bolted directly to the bus or mounting pan rather than plugging in.
Is this breaker suitable for direct current systems?
Yes, it is rated for use in DC applications up to 250VDC.
What frame family does this breaker belong to?
It is part of the Eaton Series C family and utilizes the KS frame footprint.
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