Siemens ET-57563 JD63B400 - 400A 3 Pole Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
ET-57563
JD63B400 - 400A 3 Pole Molded Case Circuit Breaker
Brand
Siemens
SKU
ET-57563
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Siemens JD63B400 - 400A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for heavy-duty commercial and industrial applications, the Siemens ET-57563 is a 3-pole, 400A molded case circuit breaker. The ET prefix designates an E-Frame breaker equipped with a thermal magnetic trip unit, delivering reliable long-time and instantaneous (LI) protection. This unit mount MCCB installs into Siemens P3, P4, and P5 panelboards as well as compatible switchboards. Rated at 65kAIC at 240V, it features adjustable magnetic trip settings and is replaced by the JXD63B400.Specifications
| Brand | Siemens |
|---|---|
| Part Number | ET-57563-R |
| Series | ET |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P3, P4, P5 Panelboards, Switchboards |
| Wire Gauge | 3/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 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, Bell Alarm |
|---|---|
| Accessories | Line and Load Lugs (TA2J6500) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
7 answersWhat is the difference between the JD63B400 and JD63B400L catalog numbers?
The JD63B400 is shipped as an unassembled kit containing the frame (JD63F400), interchangeable trip unit (JD63T400), and six lugs in separate packages. The JD63B400L includes the exact same components but comes factory-assembled in a single container.
Is there a non-interchangeable trip version of this 400A breaker?
Yes, the JXD63B400 is the equivalent Siemens Sentron breaker with a factory-installed, non-interchangeable trip unit. Non-interchangeable models are required for reverse-feed applications per UL 489 guidelines.
Which lug kit is included with the JD63B400 circuit breaker?
This breaker includes the TA2J6500 line and load lug kit, which accepts 3/0 AWG to 500 kcmil copper or aluminum conductors.
Which Siemens panelboards are compatible with the JD63B400?
This unit-mount breaker is designed for use in Siemens P3, P4, and P5 panelboards, as well as compatible Siemens switchboards and motor control centers.
Can the trip settings on the JD63B400 be adjusted?
Yes, this thermal-magnetic breaker features a fixed thermal setting for long-time overcurrent protection and an adjustable magnetic setting for instantaneous short-circuit protection.
Can the JD63B400 be reverse fed?
No. Because the JD63B400 features an interchangeable trip unit, it is marked with LINE and LOAD and cannot be reverse fed under UL 489 guidelines. For reverse-feed applications, a non-interchangeable trip breaker like the JXD63B400 must be used.
Is the JD63B400 rated for DC voltage applications?
Yes, in addition to its AC ratings, this breaker is rated for up to 500VDC. It provides a 30kA interrupting capacity at 250VDC and 25kA at 500VDC.
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