Overview
The Allen-Bradley 816-BOV4 is a thermal overload relay engineered for motor and circuit protection in industrial control applications. This Series K unit provides reliable overcurrent detection and automatic circuit interruption to prevent equipment damage and downtime. Thermal overload relays are essential components in motor starter assemblies and standalone protection schemes across manufacturing, food processing, HVAC, and material handling systems.
Key Features
- Thermal-type overload detection for smooth motor protection
- Manual reset operation for operator control and fault diagnostics
- Series K design compatible with Allen-Bradley motor control centers and starters
- Compact form factor suitable for panel mounting and OEM integration
- Proven eutectic alloy construction for reliable trip performance
- Field-replaceable heater elements for easy maintenance and calibration
Technical Specifications
Verify exact electrical ratings and heater element selections with your system integrator or consult the Allen-Bradley selector guide. The 816-BOV4 supports a range of heater options to match motor FLA (Full Load Amperage) from fractional to several horsepower ratings. Mounting is standard DIN or NEMA enclosure format compatible with Allen-Bradley contactor and starter assemblies.
Typical Applications
- Three-phase induction motor protection in industrial machinery
- Pump and fan motor control circuits
- Conveyor and material handling equipment protection
- Process automation and motion control systems
- HVAC and refrigeration compressor protection
- OEM machine builder integration for packaged control systems
Compatibility & Replacements
Compatible With
- Allen-Bradley motor starters and contactors (Series A–K)
- Allen-Bradley 509, 513, 514, 515 series motor control centers
- Standard NEMA Size 00–4 starter assemblies
- Allen-Bradley IEC 60947 compliant control equipment
- Three-phase 208V, 240V, 480V industrial power systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 816-BOV4 is a discontinued model; direct replacements may require heater element recalibration or minor mechanical adjustment depending on your specific motor starter frame and trip-point requirements.
Works With
- Allen-Bradley overload heater element selector tables and charts
- Standard thermal overload relay auxiliary contact blocks
- Manual motor starters and combination starters
- Legacy industrial automation control systems built pre-2010
- IEC 60947-4-1 motor control standards and NEMA MG-1 compliance
