Westinghouse Electric BST-ON On-Delay Timing Relay

Description:

The Westinghouse BST-ON Timer Relay is an industrial on-delay timing relay used in automation, motor control, and process sequencing systems. Commonly installed in control panels, motor starters, HVAC systems, and industrial machinery requiring delayed switching or timed control functions. Maintenance electricians, control engineers, and industrial automation technicians use this timer relay for replacement, retrofit, or industrial control system maintenance. The BST-ON series provides adjustable on-delay timing operation with a timing range of 0–30 seconds.

Applications:

The Westinghouse BST-ON timer relay is commonly used in industrial automation and electrical control systems to delay motor startup, sequence machine operations, prevent simultaneous equipment energization, and provide controlled timing functions. It is installed in manufacturing facilities, conveyor systems, HVAC controls, compressors, and industrial process equipment where reliable timing control and stable relay operation are required. On-delay timer relays activate output contacts only after the preset delay interval has elapsed.

Technical Specifications:

• Manufacturer: Westinghouse Electric Corporation
• Model: BST-ON
• Product Type: On-Delay Timer Relay
• Timing Function: On-delay timing operation
• Adjustable Time Range: 0–30 Seconds
• Voltage Rating: 120V AC 60Hz / 110V AC 50Hz
• Maximum Inductive Load: 132VAC, 0.5A
• Relay Type: Solid-state timing relay attachment
• Function: Delayed switching and timing control
• Application: Industrial automation and motor control systems
• System Compatibility: Industrial control panels, contactors, and relay systems
• Mounting Type: Panel or relay-mounted installation
• Control Function: Adjustable delayed output activation
• Operating Environment: Industrial electrical and automation applications
• Intended Use: Motor sequencing, startup delay, and process timing control
• Performance Feature: Reliable adjustable on-delay timing operation for industrial controls

Common Replacements:

• Eaton Time Delay Relay
• Omron H3CR Series Timer Relay
• Schneider Electric Zelio Time Delay Relay