Elevator Limit Switch QM-S3-1370

Elevator Limit Switch QM-S3-1370 is used for elevator position detection, travel limit protection, and shaft-side signal control applications.

This switch is commonly checked in elevator maintenance when the car position, terminal limit, speed change point, or shaft signal does not respond correctly. In actual replacement, the model number is important, but the old switch structure, contact type, roller arm, wiring terminal, and installation bracket should also be confirmed.

In elevator spare parts purchasing, this product may be searched as:

• Elevator Limit Switch QM-S3-1370

• QM-S3-1370 Limit Switch

• S3-1370 Limit Switch

• S3-B1370 Elevator Switch

• XAA177BW1 Limit Switch

• Elevator Shaft Limit Switch

• Elevator Travel Limit Switch

• Elevator Speed Change Switch

The main references for this page are:

• QM-S3-1370

• S3-1370

• S3-B1370

• XAA177BW1

• QM-S3-1370 NC

These references are useful for search and inquiry matching, but they should not be treated as automatic replacement references. Before ordering, buyers should check the old switch label and actual installation details.

Key details to confirm include:

• complete model number on the old switch

• whether the label shows QM-S3-1370

• contact type, such as NC or NO if marked

• roller arm or actuator shape

• terminal layout and wiring direction

• mounting hole position

• bracket structure

• installation location in the shaft or machine area

• old switch front, side, label, and wiring photos

This switch may be replaced when the elevator has limit signal failure, terminal position fault, speed change signal abnormality, damaged roller arm, loose terminal, or poor switch contact. These problems may also come from wiring, controller input, bracket misalignment, cam position, or previous adjustment work.

For buyers in Saudi Arabia, Jordan, Egypt, Iraq, UAE, Brazil, Chile, Spain, and Italy, clear old-switch photos and wiring photos are recommended before shipment, especially when this QM-S3-1370 limit switch is ordered together with other elevator electrical or shaft components.

FAQ

Is QM-S3-1370 the same as XAA177BW1?

They may appear together in some spare parts listings, but final confirmation should still be based on the old switch label, contact type, actuator shape, and installation position.

What photos should I send before ordering?

Please send the old label, full switch body, roller or actuator area, wiring terminal, and installed position photo.

Can I replace it only by the model number?

The model number is important, but limit switches may differ in contact logic, actuator direction, bracket position, and wiring terminals. Photo confirmation is recommended before shipment.