Westinghouse Circuit Breaker DK3400W 400 Amps 240 Volts 3 Pole w 300 Amp Trip

Description:

The Westinghouse DK3400W Circuit Breaker 400 Amps 240 Volts 3 Pole with 300 Amp Trip is an industrial molded case circuit breaker used in power distribution and motor control systems for overload and short-circuit protection. Commonly installed in industrial electrical panels, motor control centers, manufacturing equipment, and three-phase power distribution systems requiring dependable high-current circuit interruption. Maintenance technicians, electricians, and system integrators use this circuit breaker for panel upgrades, electrical maintenance, and industrial power distribution replacement applications. The DK3400W is part of the Westinghouse DK Series K-Frame molded case breaker family.

Applications:

The Westinghouse DK3400W circuit breaker is designed for industrial and commercial electrical protection in demanding power distribution environments. It is frequently used in manufacturing facilities, HVAC electrical systems, motor control applications, conveyor systems, and industrial distribution panels where dependable three-phase circuit protection and stable electrical operation are critical for equipment safety and system reliability.

Technical Specifications:

• Brand: Westinghouse
• Part Number: DK3400W
• Product Type: Molded Case Circuit Breaker
• Current Frame Rating: 400 Amp
• Trip Rating: 300 Amp
• Voltage Rating: 240 Volt
• Pole Configuration: 3 Pole
• Phase Configuration: 3 Phase
• Frame Type: K-Frame
• Circuit Breaker Series: DK Series
• Function: Overload and short-circuit protection
• Trip Type: Thermal magnetic trip unit
• Application: Industrial and commercial power distribution systems
• Suitable For: Three-phase branch and feeder circuit protection
• Mounting Type: Panelboard breaker installation
• Usage Environment: Industrial electrical systems
• Interrupt Rating: Up to 65kA @ 240VAC depending on configuration
• Compatibility: Industrial power distribution equipment
• Construction: Industrial-duty breaker housing
• Designed For: Continuous industrial operation

Common Replacements:

• Eaton DK Series Circuit Breaker
• Siemens Industrial Circuit Breaker
• Square D PowerPact Circuit Breaker