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Siemens JXD62B350 Molded Case Circuit Breaker
- 350A
- 2 Pole
- Unit Mount
Siemens
JXD62B350
Molded Case Circuit Breaker
Brand
Siemens
SKU
JXD62B350
Quantity
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Siemens JXD62B350 - 350A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, this 350A unit mount breaker features fixed thermal and adjustable magnetic trip settings. It installs into Siemens Sentron P4, P5, S4, and S5 panelboards, as well as compatible switchboards. The 2-pole configuration is housed within a 3-pole frame and provides a 65kAIC rating at 240VAC. Line and load lugs are not included, allowing for customized terminal configurations. This legacy model is eventually replaced by the 3VA series.Specifications
| Brand | Siemens |
|---|---|
| Series | JXD6 |
| Amperage | 350A |
| 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 | JXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5, S4, S5), Switchboards, Enclosures |
| Wire Gauge | 3/0 AWG - 500 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 2-Pole in 3-Pole Housing |
Product FAQs
7 answersWhich Siemens panelboards accept the JXD62B350 breaker?
This bolt-on breaker is compatible with Siemens Sentron P4, P5, S4, and S5 panelboards, as well as compatible Siemens switchboards and distribution enclosures.
Does the 2-pole JXD62B350 take up the space of a standard 2-pole breaker?
No, the JXD62B350 is a 2-pole circuit breaker built within a 3-pole JD frame housing. It will occupy the physical footprint of a 3-pole breaker when installed in your panelboard or enclosure.
Can I use the JXD62B350 to replace an older I-T-E JD frame breaker?
Yes, Siemens acquired I-T-E and continued manufacturing the JD frame with the same physical dimensions and mounting hardware. The JXD62B350 can serve as a direct drop-in replacement for legacy I-T-E breakers with matching specifications.
Is the JXD62B350 rated for use in DC electrical systems?
Yes, this thermal-magnetic breaker is rated for direct current applications up to 250VDC, where it provides an interrupting capacity of 30kAIC.
What size wire is compatible with the JXD62B350 lugs?
The standard lugs for this breaker are designed to accept wire gauges from 3/0 AWG up to 500 kcmil. Ensure you use properly sized copper or aluminum conductors based on your system requirements.
How does the trip unit on the JXD62B350 operate?
It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection. The magnetic trip can be adjusted to coordinate with other protective devices in your system.
How is the JXD62B350 installed into a panelboard?
The JXD62B350 is a unit-mount, bolt-on circuit breaker. It must be securely bolted directly to the panelboard or switchboard busbars, ensuring a robust connection for high-amperage applications.
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