Control Power Relay

Control Power Relay

This is a control power relay, identified by London Machinery part number MA-40945. It is a critical electrical component located within the operator's control console on London rear discharge mixers. The relay acts as an electrically operated switch, allowing a low-power signal from a switch on the control panel to activate a high-current circuit, such as for lights, motors, or other accessories. Replacement is necessary when the relay fails to activate, de-activate, or switches intermittently, leading to loss of function for the associated system. This is a common wear item in heavy-duty vehicle electrical systems.

Key Features

• Direct OEM replacement for London Machinery part number MA-40945
• Designed for use within the mixer's main electrical control console
• Enables low-amperage switches to control high-amperage circuits
• Plug-in design for serviceability
• Standard component for rear discharge mixer electrical systems

Fits These Mixers

McNeilus, Con-Tech, CBMW, Kimble. Fits London rear discharge concrete mixers. It is specifically located within the relay mounting assembly inside the main operator control console.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.