NEW Summer 2026 SuperGear! SuperPoints Accepted »

Siemens JK3B175 - 175A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU JK3B175
Siemens JK3B175 3 Pole Circuit Breaker
Free Shipping Over $99

Siemens JK3B175 - 175A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU JK3B175
Select Item Condition
Earn 1253 SuperPoints

Quantity
Planning a Big Order?
Bulk pricing available—let us know your needs for a quote.
Get a quote
Shop with Confidence
Enjoy a free 60-day warranty, extendable to 1 year at checkout.
Learn more
Siemens JK3B175 3 Pole Circuit Breaker

Siemens JK3B175 - 175A 3 Pole Molded Case Circuit Breaker

Re-Certified

$1253.96 In stock

Quantity

DescriptionSpecificationsSuperClubWarranties
Description
Built to support legacy infrastructure, this 175-amp molded case circuit breaker delivers essential thermal-magnetic protection for three-phase circuits. The bolt-on design fits seamlessly into Siemens SB1, SB2, and S5 switchboards, as well as P4 and P5 panelboards. With an interrupting capacity of 25kA at 240VAC and 14kA at 600VAC, it handles standard commercial fault levels. Facilities looking to upgrade can transition to the newer FXD63B175 substitute using an updated mounting strap kit.

Specifications

Brand Siemens
Series JK
Part Number JK3B175-R
Amperage 175A
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Poles 3
Phase 3
AIC Rating 25kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens P4, P5, SB1, SB2, S5 Panelboards, Switchboards
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Wire Gauge 4 AWG - 350 kcmil (Cu/Al)
Max Wire 350 kcmil
Min Wire 4 AWG
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Line and Load Lugs Included
Standards UL 489, CSA C22.2 No. 5
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip

SuperClub

Get rewarded every time you shop! Join SuperClub for free and start earning points on every purchase, unlocking exclusive discounts, special promos, and VIP perks. Already a member? Keep shopping to level up your rewards and enjoy even more benefits, including faster shipping, extended returns, and premium offers.

Learn more about SuperClub

Warranties

We’ve got you covered!

When shopping with SuperBreakers, you’ll have peace of mind knowing that every single item you purchase includes a 60 day warranty, free of charge. Why such confidence? Because only the highest quality electrical parts have a place on our shelves, and we stand by every single one we sell.

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.

Click here to read our full warranty details

Shipping

Free Shipping Policy

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.

Click here to read our full shipping policy
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.
Expedited Shipments

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.

Related Products

Recently Viewed