Westinghouse PB3B Contact Block Model B Switch

Description:

The Westinghouse PB3B Contact Block Model B Switch is used in industrial control and operator interface systems. Commonly installed in pushbutton stations, motor control centers, manufacturing equipment, and industrial automation panels. Maintenance teams and system integrators use this contact block for replacement, retrofit projects, preventive maintenance, and industrial control station upgrades. The PB3B is part of the Westinghouse Model B pushbutton control series designed for dependable industrial switching applications.

Applications:

The Westinghouse PB3B contact block switch is commonly used in manufacturing facilities, industrial automation systems, HVAC equipment, power distribution systems, and motor control applications where reliable auxiliary contact switching and dependable operator control functionality are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse
• Part Number: PB3B
• Product Type: Contact Block Switch
• Model Type: Model B
• Contact Configuration: Normally Closed (NC)
• Application: Operator Interface and Control Switching
• Compatible Equipment: Pushbuttons and Control Stations
• Mounting Type: Operator Mounted
• Contact Type: Auxiliary Contact Block
• Terminal Type: Screw Terminal Connections
• Frequency Rating: 50/60 Hz Compatible
• Industrial Duty Rated: Yes
• Compatible Installations: Industrial Control Panels and MCC Systems
• Operating Function: Control Signal Switching and Contact Expansion
• Typical Use: Pushbutton and Selector Switch Applications
• Construction Type: Heavy Duty Industrial Control Component

Common Replacements:

• Allen-Bradley 800T-XB Contact Block
• Eaton 10250T Contact Block
• Schneider Electric Harmony ZBE102