Mars 61618 Furnas 75-90 Amp Auxiliary Switch

Product Description

The MARS 61618 is a Furnas-compatible auxiliary switch rated for 75 to 90 amp applications. It is designed to work alongside motor starters and contactors in commercial and industrial electrical systems. HVAC technicians, electricians, and maintenance professionals rely on auxiliary switches to monitor and control the status of a main switching device. When the main contactor opens or closes, the auxiliary switch follows that action, sending a signal to a control circuit or interlocking with other electrical components. This makes auxiliary switches essential in motor control centers, rooftop units, chillers, air handlers, and industrial equipment panels. The MARS 61618 is built to replace or supplement original Furnas auxiliary switch components, helping restore full functionality to existing electrical control systems without requiring a full panel replacement. Auxiliary switches in this amp range are commonly used where larger motors or higher-load contactors are present. They provide reliable feedback to programmable logic controllers, building automation systems, and relay-based control panels. For HVAC systems, proper auxiliary switch operation ensures that fan motors, compressors, and pumps start and stop in the correct sequence. Electricians working on motor control applications need switches that can handle the demands of frequent cycling, varying load conditions, and tight panel spaces. The MARS 61618 meets those needs as a direct Furnas replacement part. Using a genuine replacement like this helps maintain the original design intent of the control panel and reduces troubleshooting time during service calls. It is a straightforward, reliable component for any technician managing motor starter maintenance or control circuit repairs.

• Compatible with Furnas motor starters and contactors in the 75 to 90 amp range
• Used to monitor and interlock control circuits in HVAC, industrial, and commercial electrical systems
• Serves as a direct replacement for Furnas auxiliary switch components

Product Highlights

The MARS 61618 auxiliary switch is a reliable Furnas-compatible replacement for 75 to 90 amp motor starter applications. It supports proper control circuit operation in HVAC, commercial, and industrial electrical panels.

Product Information

Standard Information

• Brand: MARS
• Manufacturer Part Number: 61618

Technical Specifications

• Amp Rating: 75 to 90 amps
• Compatible Brand: Furnas
• Component Type: Auxiliary Switch