Overview
The Ward Leonard 146-250 is a general-purpose DC relay designed for industrial automation and control applications. This 300V, 1A relay is part of the proven 146-series line manufactured by Danaher Controls (formerly Ward Leonard Electric Company). The unit is supplied in used condition and has been tested for reliable operation in field replacement or emergency spare inventory applications.
Key Features
- 300V DC maximum rated voltage
- 1 amp output current rating
- Designed for general-purpose automation and control circuits
- Part of the robust 146-series relay family
- Suitable for field-proven industrial switching applications
- Used condition—fully functional and ready to deploy
Technical Specifications
The Ward Leonard 146-250 is engineered for reliable DC switching in industrial environments. Typical applications include motor starters, solenoid control, and field loss relay circuits common in mid-20th-century manufacturing equipment and power distribution panels. The relay meets historical industrial control standards for voltage isolation and contact durability.
Typical Applications
- DC motor control circuits and starter interlock logic
- Field loss and overload detection relays in industrial machinery
- Emergency stop and safety circuit switching
- Automation panel replacement and retrofit applications
- Facility maintenance and equipment restoration projects
Compatibility & Replacements
Compatible With
- Industrial DC control circuits rated 300V or below
- Manual starter and magnetic motor control panels
- Legacy automation systems and OEM equipment
- Field loss and load-sensing relay circuits
- Equipment built to electrical codes of the 1960s–1990s
Replaces / Drop-In Replacement For
The Ward Leonard 146-250 was designed as a general-purpose industrial relay. Verify compatibility with your system integrator or equipment documentation before ordering to ensure correct socket type and coil voltage matching.
Works With
- DC power supplies and battery-backed control circuits (24VDC, 48VDC, 120VDC, 240VDC)
- Electromechanical starter and contactor logic
- Relay sockets and panel-mount hardware compatible with 146-series envelope
- Manual and semiautomatic control station wiring






