Siemens 3SE7 Rope Pull Switch – SIRIUS Series

Reliable Emergency Stop Protection

The 3SE7 Emergency Grab Wire Switch protects hazardous machinery and long system sections. Operators can pull the cable from any point to stop the machine immediately. Because the effective range depends only on the wire length, you can secure even large conveyor systems with ease.

Industries commonly use these switches on conveyor belts, packaging lines, and vehicle production systems. As a result, workers gain fast and reliable emergency control across extended equipment.

Flexible Design Options

The 3SE7 series supports wire lengths up to 50m, 75m, and even 2 × 75m configurations. Depending on the model, you can choose:

• 1 NO + 1 NC contacts

• 2 NC contacts

• 1 NO + 3 NC contacts

• 2 NO + 2 NC contacts

In addition, selected models include a factory-fitted red LED (24V DC). This bright indicator allows operators to see the switch status from up to 50m away.

Durable Metal Construction

Siemens builds this switch with a rugged aluminium alloy housing for long-term durability. The enclosure mounts securely with screws and achieves IP65 or IP67 protection, depending on the model. Therefore, it withstands dust, water jets, and harsh industrial environments.

Moreover, the switch operates reliably in temperatures ranging from -25°C to +70°C.

Safe and Positive Operation

The switch features positive opening NC contacts and positive latching for dependable emergency stopping. When the cable is pulled or breaks, the system activates immediately. A rotate-to-unlatch mechanism ensures manual reset, preventing unintended restarts.

Furthermore, the design complies with EN ISO 13850 and supports applications up to Category 4 (EN 954-1). UL and CSA approvals confirm its global safety acceptance.

Key Benefits

• Supports long cable runs up to 75m

• Mechanical durability of 100,000 cycles

• Manual reset for added safety

• Suitable for high-risk industrial zones

The Siemens 3SE7 Rope Pull Switch delivers dependable emergency stopping, strong construction, and compliance with international safety standards — making it an essential safety solution for modern industrial systems.