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Siemens KMB3B800 - 800A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU KMB3B800
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Siemens KMB3B800 - 800A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU KMB3B800
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Siemens KMB3B800 - 800A 3 Pole Molded Case Circuit Breaker

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$2454.56 Low stock

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DescriptionSpecificationsSuperClubWarranties
Description
Designed to handle demanding loads, the Siemens KMB3B800 is a 3-pole, 800A MCCB. It features an interchangeable thermal-magnetic trip unit for reliable fault protection. This bolt-on unit integrates into Siemens P5 panelboards, SB switchboards, and MCCs. For infrastructure updates, this legacy breaker is replaced by the RD63B800 (kit required). Operating on 600VAC systems, it provides a 30kAIC rating at 480V. Load lugs are omitted and must be acquired independently.

Specifications

Brand Siemens
Series KMB
Part Number KMB3B800-R
Amperage 800A
Voltage 240VAC, 480VAC, 600VAC
Poles 3
Phase 3
AIC Rating 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC
Mounting Style Bolt-On
Terminal Type Lugs
For Use With Siemens SB Switchboards, P5 Panelboards, Motor Control Centers
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Wire Gauge 3 Cables: 250-500 kcmil (Cu/Al) OR 2 Cables: 500-750 kcmil (Cu/Al)
Max Wire 750 kcmil
Min Wire 250 kcmil
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits
Accessories Lugs Not Included
Standards UL 489, CSA C22.2 No. 5
Approval CSA, UL
Temp Rating 40C
Construction Features Interchangeable Trip Unit

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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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International Shipping

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