Siemens / ITE JKL3B275 Molded Case Circuit Breaker
- 275A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE JKL3B275 - 275A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering reliable thermal-magnetic circuit protection, the Siemens JKL3B275 is a 3-pole, 275A molded case circuit breaker built for commercial facilities. This bolt-on unit installs into Siemens and ITE P4, P5, S5, and CDP-6 panelboards. It provides a reliable drop-in solution for legacy systems, while the JXD63B300 is available as a modern cross-reference. With a 65kAIC interrupt rating at 240VAC, it includes load side lugs and accommodates up to 500 kcmil wiring.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | JKL3B275-R |
| Series | JKL |
| Amperage | 275A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | JKL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens / ITE P4, P5, S5, CDP-6 Panelboards |
| Wire Gauge | 1/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 1/0 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Interchangeable Trip |
Product FAQs
7 answersWhich panelboards are compatible with the JKL3B275 circuit breaker?
This bolt-on breaker is designed for use in Siemens and ITE P4, P5, S5, and CDP-6 panelboards.
What wire sizes do the lugs on the JKL3B275 accept?
The standard lugs accommodate copper or aluminum conductors ranging from 1/0 AWG to 500 kcmil.
Is the trip unit on the JKL3B275 adjustable?
Yes, it features a thermal magnetic trip unit with fixed long-time thermal protection and an adjustable instantaneous magnetic trip setting.
Is the JKL3B275 manufactured by ITE or Siemens?
Siemens acquired ITE, so this breaker may be branded as either Siemens or ITE depending on the exact production date. Both are functionally identical and fit the same J-Frame applications.
Can the JKL3B275 be used in DC electrical systems?
Yes, this breaker is rated for up to 250VDC applications with an interrupting capacity of 10kA.
How is the JKL3B275 installed in a panelboard?
This is a bolt-on circuit breaker. It secures directly to the panelboard bus using bolted connections rather than plugging in.
What frame class does the JKL3B275 belong to?
It is part of the Siemens and ITE J-Frame molded case circuit breaker family, specifically utilizing the JKL frame type.
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