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Siemens JD62B300 Molded Case Circuit Breaker
- 300A
- 2 Pole
- Unit Mount
Siemens
JD62B300
Molded Case Circuit Breaker
Brand
Siemens
SKU
JD62B300
Quantity
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Siemens JD62B300 - 300A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial power systems, the JD62B300 provides reliable thermal-magnetic protection with an interchangeable trip unit. This 300A molded case circuit breaker delivers long-time and instantaneous (LI) trip functions. It installs into Siemens panelboards and switchboards. This legacy model is replaced by the 3VA5330-5EC31-0AA0, which requires a mounting strap kit. Rated 35 kAIC at 480VAC, this unit mount MCCB includes line and load lugs for immediate integration.Specifications
| Brand | Siemens |
|---|---|
| Part Number | JD62B300 |
| Series | JD6 |
| Amperage | 300A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | JD |
|---|---|
| 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, 2-Pole in 3-Pole Housing |
Product FAQs
6 answersWhat enclosures are compatible with the JD62B300 circuit breaker?
This 2-pole JD-frame breaker is designed to mount in Siemens Sentron panelboards, switchboards, and motor control centers.
What wire sizes do the standard lugs on the JD62B300 accept?
The included lugs accept one or two conductors per phase, ranging from 3/0 AWG to 500 kcmil for copper wire, or 4/0 AWG to 500 kcmil for aluminum wire.
Is the trip unit on the JD62B300 adjustable?
Yes, this thermal-magnetic breaker features a fixed thermal element for long-time (L) protection and an adjustable magnetic element for instantaneous (I) short-circuit protection.
Can the Siemens JD62B300 replace older I-T-E breakers?
Yes, it serves as a direct replacement for legacy I-T-E Sentron JD6 series 2-pole, 300A breakers with the same frame size and mounting configuration.
Is the JD62B300 suitable for direct current (DC) systems?
Yes, in addition to AC applications, this breaker is rated for up to 250VDC with a 30kAIC interrupting capacity, allowing integration into compatible DC power systems.
What replacement lug kit is compatible with the JD62B300?
The Siemens TA2J6500 lug terminal kit is compatible with this JD-frame breaker, providing a 2-barrel aluminum lug suitable for both line and load sides.
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