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Siemens JD63B250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Siemens
JD63B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
JD63B250
Quantity
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Siemens JD63B250 - 250A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial power distribution, the Siemens JD63B250 is a 250A, 3-pole molded case circuit breaker with fixed thermal and adjustable magnetic settings for LI protection. This unit-mount breaker installs into Siemens Sentron panelboards and switchboards. It includes line and load lugs for immediate wiring. Rated 65kAIC at 240V, this JD6 frame model is replaced by the 3VA5325-5EC31-0AA0 (requires a mounting strap kit).Specifications
| Brand | Siemens |
|---|---|
| Part Number | JD63B250 |
| Series | JD6 |
| Amperage | 250A |
| 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
4 answersWhat enclosures and panels are compatible with the JD63B250?
This breaker is designed for installation in Siemens Sentron panelboards, switchboards, and motor control centers.
Does this breaker include lugs, and what are the wire size requirements?
Yes, it includes standard line and load lugs (catalog number TA2J6500). These lugs accept one or two 3/0 AWG to 500 kcmil copper wires, or one or two 4/0 AWG to 500 kcmil aluminum wires.
What does the adjustable magnetic trip setting allow on this breaker?
The adjustable magnetic trip allows you to set the instantaneous short-circuit pickup range, which can be adjusted between 1250A and 2500A.
Is there a newer replacement model for the JD63B250?
Yes, Siemens has transitioned the legacy JD6 frame to the newer 3VA series. The direct replacement is the 3VA5325-5EC31-0AA0, though a mounting strap kit may be required for retrofitting into existing panels.
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