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Siemens JL3B125 Molded Case Circuit Breaker

  • 125A
  • 3 Pole
  • Bolt-On
Siemens JL3B125
Molded Case Circuit Breaker
Brand Siemens
SKU JL3B125
Select Item Condition
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  • 125A
  • 3 Pole
  • Bolt-On

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Siemens JL3B125 - 125A 3 Pole Molded Case Circuit Breaker

Siemens JL3B125 - 125A 3 Pole Molded Case Circuit Breaker

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$869.00 In Stock

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Description

Designed for commercial and industrial power distribution, this 125A, 3-pole molded case circuit breaker offers dependable long-time and instantaneous protection. It features an interchangeable trip unit and handles fault currents up to 35kAIC at 480VAC. The breaker bolts securely into Siemens P4 and P5 panelboards, switchboards, and motor control centers. It also provides a replacement solution for older ITE FC-1 systems and serves as a substitute for JD63B125 or JXD63B125 frames.

Specifications

Key specifications
Brand Siemens
Series JL
Amperage 125A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC
Fit and installation
Terminal Type Lugs
For Use With Siemens P4, P5 Panelboards, Switchboards, Motor Control Centers, Legacy ITE FC-1 Panelboards
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits
Accessories Lugs Not Included
Standards UL 489, CSA C22.2 No. 5, NEMA AB-1
Approval CSA, UL
Temp Rating 40C
Construction Features Interchangeable Trip Unit

Product FAQs

4 answers
Which panelboards are compatible with the Siemens JL3B125?

This J-frame breaker is designed for use in Siemens P4 and P5 panelboards, switchboards, and motor control centers. It is also backwards compatible with legacy ITE FC-1 panelboards.

Are the trip settings adjustable on the JL3B125?

Yes, this thermal-magnetic breaker features an adjustable magnetic trip for short-circuit protection, while the thermal element for long-time overload protection is fixed.

Is the JL3B125 suitable for direct current systems?

Yes, this breaker is rated for use in DC applications up to 250VDC, providing an interrupting capacity of 30kAIC at that voltage.

Can the Siemens JL3B125 replace older ITE breakers?

Yes, Siemens acquired ITE and continued manufacturing this series. The JL3B125 can directly replace older ITE breakers with the same catalog number in existing FC-1 panels and switchboards.

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