Siemens SJD6A400LSI Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
SJD6A400LSI
Molded Case Circuit Breaker
Brand
Siemens
SKU
SJD6A400LSI
Quantity
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Siemens SJD6A400LSI - 400A 3 Pole Molded Case Circuit Breaker
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400A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
Description
Part of the Sentron family, this 400A three-pole MCCB delivers microprocessor-based protection for industrial applications. The unit utilizes a Sensitrip IV electronic trip system. Designed for unit mounting, it installs into Siemens Sentron panelboards and motor control centers. This JD-frame model maintains existing infrastructure prior to 3VA series upgrades. Configurable LSI settings allow facility managers to fine-tune coordination curves. It features a 65kAIC rating at 240V.Specifications
| Brand | Siemens |
|---|---|
| Series | SJD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 80-400A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 3/0 AWG - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Reverse Feed, Non-Interchangeable Trip, True RMS Sensing, HACR Rated |
Product FAQs
6 answersWhat enclosures or panels accept this JD frame breaker?
The SJD6A400LSI is designed for use in Siemens Sentron panelboards, switchboards, and motor control centers that accommodate JD frame circuit breakers.
What lug kit is standard for this 400A breaker?
The standard aluminum lug kit for this 400A JD frame breaker is the TA2J6500. It features a 2-barrel design suitable for line and load sides, accepting wire sizes from 3/0 AWG to 500 kcmil.
Can the SJD6A400LSI be reverse fed?
Yes, this breaker features a non-interchangeable trip unit and is suitable for reverse feed applications.
What adjustments are available on the LSI trip unit?
The LSI electronic trip unit allows you to adjust Long-Time, Short-Time, and Instantaneous pickup and delay settings for precise overcurrent coordination in your electrical system.
Does this breaker provide equipment ground fault protection?
No, this model features an LSI trip unit. Ground fault protection requires a breaker equipped with an LSIG trip unit.
Can this breaker replace older JD6 or JXD6 models?
Yes, the SJD6 is the electronic Sensitrip version of the JD frame. It shares the same physical footprint as older thermal-magnetic JD6, JXD6, and HJD6 breakers, allowing it to serve as a direct physical replacement.
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