Overview
The Allen-Bradley 592-JOV16 /B thermal overload relay is a rugged NEMA-rated protection device engineered for industrial motor control circuits. This eutectic alloy overload relay provides reliable thermal protection against overcurrent conditions in AC electrical systems rated 120–600V. The compact panel-mount design integrates seamlessly into Size 00 series B and D 500 line starters or can be mounted separately in control enclosures.
Key Features
- 24A Continuous Current Rating: Rated for 24A maximum continuous current, protecting motors and loads in the fractional to small HP range
- 3-Pole Configuration: Three-pole design for three-phase motor protection
- Manual Reset: Requires operator reset after overcurrent trip, ensuring controlled restart procedures
- Eutectic Alloy Technology: Precision eutectic metal alloy provides accurate, repeatable trip curve performance
- Panel Mount: Open-type enclosure designed for direct panel integration with Size 00 Series B and D starters
- Normally Closed Contacts: Single NC (1 NC) contact configuration for fail-safe control logic
Technical Specifications
- Rated Voltage: 120–600V AC
- Current Rating: 24 Amperes (max continuous)
- Number of Poles: 3
- Contact Configuration: 1 Normally Closed (NC)
- Reset Type: Manual
- Enclosure Type: Open
- Mounting Style: Panel Mount
- Thermal Element Material: Eutectic Alloy
- Compatible Heater Elements: W38 and other standard overload heater cartridges (sold separately)
- Approvals: CSA, KC
Typical Applications
The 592-JOV16 is commonly installed in motor starters, soft starters, and dedicated control panels where three-phase AC motor protection is required. Typical applications include:
- Size 00 Series B and D 500 line motor starters
- Fractional to 3 HP three-phase induction motor circuits
- Machine tool control cabinets and automation panels
- HVAC and pump motor protection systems
- Industrial production lines and conveyor systems
- Separate panel-mount thermal overload protection
Compatibility & Replacements
Compatible With
- Allen-Bradley Size 00 Series B Motor Starters
- Allen-Bradley Size 00 Series D 500 Line Motor Starters
- Three-phase AC circuits rated 120–600V
- Standard eutectic alloy heater cartridges (W38, W39, W40 styles)
- Manual and automatic motor starter control schemes
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 592-JOV16 is a direct replacement for earlier 592-JOV16 series units. For alternative overload relay models or cross-compatibility with other manufacturers’ thermal relays, contact your controls engineer or distributor for verification.
Works With
- Allen-Bradley contactor and starter assemblies
- Thermal overload heater elements (W-class cartridges)
- Three-phase AC distribution systems
- Industrial control logic using NO/NC switching contacts
- Manual and electromagnetic motor starter control circuits
