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Siemens JL63B300 - 300A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU JL63B300
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Siemens JL63B300 - 300A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU JL63B300
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Siemens JL63B300 - 300A 3 Pole Molded Case Circuit Breaker

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$1504.75 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
The JL63B300 is a 3-pole, 300A molded case circuit breaker designed for commercial power distribution. As a legacy J-Frame unit, it provides robust thermal-magnetic trip functions with adjustable magnetic settings. This bolt-on breaker fits into Siemens P2, P3, P4, and P5 panelboards, as well as older ITE enclosures. It serves as a replacement for aging infrastructure and is superseded by the JD63B300. Rated for 65kAIC at 240VAC, it ensures reliable fault interruption and is HACR rated.

Specifications

Brand Siemens
Series JL
Part Number JL63B300
Amperage 300A
Voltage 600VAC, 500VDC
Poles 3
Phase 3
AIC Rating 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens P2, P3, P4, P5 Panelboards, Legacy ITE Panelboards
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Wire Gauge 3/0 AWG - 500 kcmil
Max Wire 500 kcmil
Min Wire 3/0 AWG
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Mechanical Lug Kits
Accessories Line and Load Lugs Included
Standards UL 489, CSA C22.2 No. 5, NEMA AB-1
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Interchangeable Trip Unit, Trip-Free Mechanism

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Warranties

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If anything goes wrong with your item that is not a result of misuse or normal wear and tear, we’ll gladly replace it at no cost to you.

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Shipping

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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

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Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
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Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

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