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Siemens JD63B400L Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
JD63B400L
Molded Case Circuit Breaker
Brand
Siemens
SKU
JD63B400L
Quantity
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Siemens JD63B400L - 400A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Sentron JD frame line, the Siemens JD63B400L is a 3-pole, 400A molded case circuit breaker designed for commercial and industrial power distribution. It delivers robust overcurrent protection for heavy-duty electrical systems. This unit mount MCCB installs into Siemens Sentron panelboards, switchboards, and motor control centers. It comes equipped with factory-installed TA2J6500 line and load lugs for immediate wiring.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JD63B400L |
| Series | JD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (1-2) 3/0 AWG - 500 kcmil (Cu) or (1-2) 4/0 AWG - 500 kcmil (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG (Cu), 4/0 AWG (Al) |
| 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, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA2J6500) Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
6 answersWhat does the "L" in the JD63B400L catalog number indicate?
The "L" suffix indicates that the breaker frame, interchangeable trip unit, and line and load lugs are factory-assembled and shipped in a single container.
What are the individual components that make up the JD63B400L assembly?
The complete JD63B400L assembly consists of the JD63F400 breaker frame, the JD63T400 interchangeable thermal-magnetic trip unit, and a set of TA2J6500 line and load lugs.
Can the Siemens JD63B400L be reverse fed?
No. Because it is a factory-assembled breaker with an interchangeable trip unit, it is marked with LINE and LOAD designations per UL 489 requirements and cannot be reverse fed.
Is the trip unit on the JD63B400L adjustable?
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.
What size wire can be used with the included lugs?
The included TA2J6500 lugs accept either one or two cables per phase. They accommodate 3/0 AWG to 500 kcmil copper wire, or 4/0 AWG to 500 kcmil aluminum wire.
What types of enclosures and equipment is this breaker designed for?
The JD63B400L is a unit-mount breaker designed for installation in Siemens Sentron panelboards, switchboards, and motor control centers.
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