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Siemens SHJD69300 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Unit Mount
Siemens
SHJD69300
Molded Case Circuit Breaker
Brand
Siemens
SKU
SHJD69300
Quantity
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Siemens SHJD69300 - 300A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial power distribution, the Siemens SHJD69300 is a 3-pole, 300A Sentron molded case circuit breaker. It utilizes a Sensitrip solid-state trip unit with adjustable long-time and instantaneous (LI) settings for precise coordination. This JD-frame breaker installs into Siemens Sentron panelboards, SB switchboards, and motor control centers. It serves as an exact replacement for legacy HJD63B300 models. Rated for 65 kAIC at 480VAC, it delivers high interrupting capacity.Specifications
| Brand | Siemens |
|---|---|
| Part Number | SHJD69300 |
| Series | SHJD6 |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 60-300A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards (S4, S5, SPP), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| Wire Gauge | 3/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Lugs |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed, Solid State Trip Unit, True RMS Sensing |
Product FAQs
6 answersWhat panelboards and switchboards are compatible with the SHJD69300?
This Sentron JD-frame breaker is designed to install into Siemens Sentron panelboards (including S4, S5, and SPP models), SB switchboards (SB1, SB2, and SB3), and compatible motor control centers.
Which legacy Siemens breaker does the SHJD69300 replace?
The SHJD69300 serves as a direct, exact replacement for the legacy Siemens HJD63B300 molded case circuit breaker.
Are terminal lugs included with the SHJD69300?
No, terminal lugs are not included with this breaker. For standard installations, you will need to purchase a compatible lug kit, such as the Siemens TA2J6500, which accepts 3/0 AWG to 500 kcmil copper or aluminum wire.
What do the adjustable LI settings on this breaker control?
The LI designation on the Sensitrip solid-state trip unit stands for Long-Time and Instantaneous protection. Long-Time protects conductors from sustained overloads, while Instantaneous provides an immediate trip response to severe short-circuit faults. Both settings are adjustable for precise system coordination.
Is the SHJD69300 suitable for reverse feed applications?
Yes, this breaker is rated for reverse feed applications, allowing it to be back-fed safely in compatible distribution systems.
What is the advantage of the Sensitrip III electronic trip unit over standard breakers?
The Sensitrip III solid-state trip unit utilizes true RMS sensing to accurately monitor current. This provides more precise, adjustable protection and better selective coordination with downstream breakers than traditional thermal-magnetic trip units.
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