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Siemens SHJD69400NT Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
SHJD69400NT
Molded Case Circuit Breaker
Brand
Siemens
SKU
SHJD69400NT
Quantity
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Siemens SHJD69400NT - 400A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Sentron JD Frame series, this 400A molded case circuit breaker provides advanced microprocessor-based protection. It installs into Siemens S4, S5, and SPP panelboards, as well as SB-series switchboards and motor control centers. The electronic trip unit features adjustable long-time, short-time, and instantaneous (LSI) pickup settings for superior system coordination. Rated at 65 kAIC at 480VAC, it delivers reliable high-capacity defense for demanding industrial applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | SHJD69400NT |
| Series | SHJD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 80-400A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards (S4, S5, SPP), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Lugs |
|---|---|
| Accessories | LSI Trip Unit (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
7 answersAre lugs included with the SHJD69400NT circuit breaker?
No. The NT suffix in the catalog number indicates that this breaker is supplied without terminal lugs. You must purchase line and load lugs separately.
Which lug kits are compatible with this 400A JD frame breaker?
For standard applications, use the TA2J6500 aluminum lug kit or the TC2J6500 copper lug kit. Both are dual-barrel lugs that accept 3/0 AWG to 500 kcmil wire. For larger single conductors, the TA1L6750 single-barrel lug accepts 500 to 750 kcmil aluminum or 500 to 600 kcmil copper wire.
What types of Siemens panelboards and switchboards accept the SHJD69400NT?
This JD frame breaker is designed for unit-mount installation in Siemens Sentron S4, S5, and SPP panelboards, as well as SB1, SB2, and SB3 switchboards and motor control centers.
How does the LSI electronic trip unit differ from standard thermal-magnetic breakers?
The solid-state LSI (Long-Time, Short-Time, Instantaneous) trip unit allows for precise, independent adjustability of the trip curve. This provides better selective coordination in complex distribution systems compared to fixed thermal-magnetic breakers.
Can the SHJD69400NT replace older thermal-magnetic JD frame breakers?
Yes. Because it uses the standard Siemens Sentron JD frame footprint, this solid-state breaker can directly replace older thermal-magnetic versions like the JXD63B400 or HJD63B400 in existing panelboards, provided the interrupting ratings meet your system requirements.
How does the SHJD69400NT mount into the panelboard?
This is a unit-mount, bolt-on circuit breaker. It bolts directly to the busbars in compatible Siemens Sentron panelboards and switchboards.
Is the SHJD69400NT suitable for reverse feed applications?
No. According to Siemens Sentron catalog specifications, SHJD6 solid-state breakers are not acceptable for reverse connection applications.
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