Siemens JD2B400 Molded Case Circuit Breaker
- 400A
- 2 Pole
- Bolt-On
Quantity
Siemens JD2B400 - 400A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A reliable solution for industrial facilities, the Siemens JD2B400 is a 2-pole, 400A molded case circuit breaker. It features an interchangeable thermal magnetic trip unit, providing long-time and instantaneous (LI) protection with a 65kAIC rating at 240VAC. This bolt-on J-Frame breaker is designed for use with Siemens Sentron panelboards, switchboards, and enclosures. It includes line and load lugs that accept (2) 3/0 AWG to 500 kcmil wire. Can be replaced by the JD62B400 model.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JD2B400-R |
| Series | JD2 |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 250VDC |
| Frame Type | JD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | (2) 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, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, IEC 60947-2, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
6 answersWhat types of equipment are compatible with the JD2B400 circuit breaker?
This breaker is designed for use in Siemens Sentron panelboards, switchboards, motor control centers, and standalone enclosures.
What wire sizes are accepted by the lugs on this breaker?
The load side lugs accept two wires per phase, ranging from 3/0 AWG to 500 kcmil for both copper and aluminum conductors.
What is the magnetic trip adjustment range for this 400A breaker?
The instantaneous magnetic trip setting is adjustable from a minimum of 2000A to a maximum of 4000A.
Is the ITE JD2B400-R the same as the Siemens JD2B400?
Yes. Siemens acquired the ITE line, and this Sentron series breaker is fully interchangeable under both brand names. It can also be replaced by the newer JD62B400 model.
Does this breaker feature an interchangeable trip unit?
Yes, the JD2B400 features an interchangeable thermal magnetic trip unit. This allows the trip unit to be swapped if protection requirements change, without needing to replace the entire breaker frame.
How does this breaker mount into the panel?
The JD2B400 is a bolt-on circuit breaker. It bolts directly to the busbars of compatible Siemens Sentron panelboards and switchboards to ensure a secure electrical connection.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.