Overview
The Magnecraft WML35AAA-120A is a mercury displacement relay engineered for industrial switching applications requiring high reliability and current capacity. With a 35A contact rating at 120VAC, this relay is designed for demanding control circuits in manufacturing, HVAC, motor control, and facility automation environments. Mercury-wetted relay technology provides excellent contact life, low contact resistance, and minimal arcing—critical for long-term operational performance in heavy-duty settings.
Key Features
- 35A switching capacity at 120VAC
- Mercury displacement design for low contact resistance and extended life
- Multi-pole configuration available
- Industrial-grade construction for harsh environments
- Compatible with standard relay socket mounting
- Wide voltage and load specifications across coil options
Technical Specifications
- Part Number: WML35AAA-120A
- Contact Rating (AC): 120VAC 35A
- Contact Rating (DC): 125VDC 16A
- Coil Voltage: 120VAC
- Relay Type: Mercury Displacement Relay
- Poles: 2-pole configuration
- Contact Material: Mercury-wetted
- Mounting: Socket-mount compatible
Typical Applications
- Motor control and branch circuit switching
- HVAC system automation and zone control
- Industrial machinery interlocking and safety circuits
- High-current load switching in facilities management
- Power distribution equipment control
- Automation control panels and switchgear
Compatibility & Replacements
Compatible With
- Standard industrial control systems requiring 120VAC relay modules
- Motor control centers and soft-starters
- Facility automation platforms and programmable controllers
- Legacy and modern industrial control circuits
Replaces / Drop-In Replacement For
- WML35AA-120A (2-pole variant)
- WM35AAA-120A (non-mercury variant with similar ratings)
- Similar Magnecraft 35A relay models in WM/WML series
Works With
- Standard industrial relay sockets and DIN-rail mounting hardware
- 120VAC control circuits and PLC I/O modules
- Motor control relays and contactor assemblies
- HVAC control boards and facility management systems
