Westinghouse DA3400XZ Circuit Breaker 400A 3P 240V 3PH DA-3400-XZ 400 Amp 3 Pole

Description:

The Westinghouse DA3400XZ Circuit Breaker 400A 3P 240V 3PH DA-3400-XZ 400 Amp 3 Pole 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 DA3400XZ is part of the Westinghouse DA series and is commonly rated for 22kA interrupting capacity at 240VAC.

Applications:

The Westinghouse DA3400XZ 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. The breaker is commonly used in legacy Westinghouse and Eaton panelboards and switchboards.

Technical Specifications:

• Brand: Westinghouse
• Part Number: DA3400XZ
• Alternate Part Number: DA-3400-XZ
• Product Type: Molded Case Circuit Breaker
• Current Rating: 400 Amp
• Voltage Rating: 240V AC
• Pole Configuration: 3 Pole
• Phase Configuration: 3 Phase
• Interrupt Rating: 22kA @ 240VAC
• Mounting Style: Bolt-On
• Trip Type: Thermal Magnetic
• Function: Overload and short-circuit protection
• Application: Industrial and commercial power distribution systems
• Suitable For: Three-phase branch and feeder circuit protection
• Usage Environment: Industrial electrical systems
• Compatibility: Westinghouse CDP and FDP panelboards
• Construction: Industrial-duty breaker housing
• Designed For: Continuous industrial operation

Common Replacements:

• Eaton DA3400 Molded Case Circuit Breaker
• Siemens Industrial Circuit Breaker
• Square D PowerPact Circuit Breaker