MSSTC11DA40 IMO Microswitch, Screw Terminals Roller Lever 47.5mm

Why Choose the IMO MSSTC11DA40 Microswitch?

The IMO MSSTC11DA40 is a compact and dependable industrial snap-action microswitch designed for mechanical position detection, end-of-travel sensing and machine control applications. Part of the IMO MSS / MS Series microswitch range, it features a roller lever actuator with a 47.5 mm radius, making it particularly suitable for detecting moving components that travel across the switch actuator.

The MSSTC11DA40 uses a snap-action changeover mechanism to provide rapid and repeatable electrical switching as the roller lever passes through its operating point. The roller reduces sliding friction between the actuator and moving machine parts, helping provide smooth mechanical operation in repetitive industrial applications.

Featuring 1 NO + 1 NC changeover contacts, screw terminals, a maximum contact current of 6 A and a nominal contact voltage of 250 V AC, the MSSTC11DA40 provides flexible integration into industrial control circuits. Its maximum operating force of 0.86 N enables relatively light mechanical actuation while retaining the positive switching characteristics of a snap-action microswitch.

Key Advantages

• Roller lever actuator provides smooth operation against moving machine components.
• 47.5 mm lever radius provides useful mechanical reach for position sensing.
• 1 NO + 1 NC snap changeover contacts provide flexible control signalling.
• Maximum operating force of just 0.86 N supports sensitive mechanical detection.
• 6 A maximum contact current for industrial switching applications.
• 250 V AC nominal contact voltage.
• Screw terminals provide secure and straightforward electrical connections.
• Part of IMO's industrial microswitch family with a wide choice of actuator configurations.

Key Features

• IMO MSS / MS Series microswitch.
• Roller lever actuator.
• 47.5 mm roller lever radius.
• 1 NO + 1 NC contact configuration.
• Snap changeover contact action.
• 6 A maximum contact current.
• 250 V AC nominal contact voltage.
• 0.86 N maximum operating force.
• Screw terminal connections.
• Glass-reinforced plastic construction within the MSS family.
• 25.4 mm fixing centres within the MSS family.
• MSS family mechanical operational life of up to 10 million cycles.
• MSS family protection options include IP20, IP40 and IP65.
• RoHS compliant.

Reliable Roller-Lever Position Sensing

Microswitches convert mechanical movement into an electrical switching signal when their actuator reaches a defined operating position. The IMO MSSTC11DA40 uses a 47.5 mm radius roller lever and snap-action mechanism to operate its changeover contacts, enabling machinery and control systems to detect movement, confirm component position or identify an end-of-travel condition.

A roller lever is particularly useful when a cam, plate, door or other moving component travels across the actuator rather than pressing directly onto a plunger. The rotating roller helps reduce sliding friction and wear at the point of contact, while the lever provides additional mechanical reach and relatively low operating force for dependable repetitive sensing.

Typical Applications

• Industrial machinery position detection.
• Mechanical limit and end-of-travel sensing.
• Cam-operated switching mechanisms.
• Conveyors and material handling machinery.
• Automated production equipment.
• Machine tools and processing equipment.
• Packaging and assembly machinery.
• Doors, guards and mechanical interlocking systems.
• OEM machinery and automation equipment.