Siemens Rope Pulley

The 3SE7 series of grab wire switches (trip wire switches, cable operated switches) are used for monitoring or for EMERGENCY STOP devices on particularly dangerous system sections.
As the effective range of a grab wire switch is only limited by the length of the grab wire, large systems can also be protected. Switches (requiring pulling at both ends) and conveyor belt unbalance trackers are used primarily for monitoring very long belt systems.

The switches for wire lengths up to 50m are available with 1 NO + 1 NC or 2 NC contacts and for up to 75m with 1 NO + 3 NC contacts. The switches for wire lengths of 2 ´ 75m and the conveyor belt unbalance trackers are supplied with 2 NO + 2 NC contacts.
The grab wire switch and the conveyor belt unbalance tracker are also available with a factory fitted LED (red, 24 V DC). This light has innovative on board chip technology that allows the operating state of the switch to be visible at a distance of at least 50m.

The NC contacts of the grab wire switch and the conveyor belt unbalance tracker are positive opening. The grab wire switches with one side operation are held in free position by the pre-tension on the turnbuckle. In the 3SE7 140 and 3SE7 150 grab wire switches, both switching contacts are available for wire-break/wire-pull signalling. The NO contact can be used, for example, for signalling purposes. On switches with interlocking, with a pre-tensioned wire, the locking must be deactivated beforehand in order to return the grab wire switch to its original position.

Positive latching and positive NC contacts
Switches for wire lengths up to 75m
Metal housing
Enclosure is screw mounted
IP67 rating
Operating temperature: -25 to +70°C

Stock nos. 764-4341, 764-4301, 764-4304, 764-4357 are fitted with an indicator light.

UL,CSA

The switches are equipped with positive latching and positive NC contacts and are therefore suitable for operation in EMERGENCY STOP devices in accordance with EN ISO 13850. They are usable up to Category 4 according to EN 954-1.

This rope tensioner system component enhances rope management in various applications. With its quality construction and practical design, it ensures efficient rope tensioning, making it essential in industries that require precise handling. Its importance lies in improving safety and operational efficiency within mechanical systems.

• Made from durable die-cast zinc for long-lasting use
• Rotatable roller design for adaptable installation options
• Weighs 0.034kg for easy integration into existing systems
• Promotes effective environmental compliance for safer operations
• Designed for heavy-duty cable management tasks
• Supports smooth operation in pulley systems

• Utilised with industrial machines requiring precise rope control
• Suitable for connecting cables in automation systems
• Ideal for environments where effective rope tensioning is critical
• Employed in various mechanical setups needing reliable support

Regularly inspect for wear and clean with mild detergents to ensure ongoing functionality.

Yes, it accommodates various rope materials, providing versatility in applications.

It integrates smoothly with standard pulley systems for straightforward upgrades.

The weight capacity depends on the pulley system configuration and the rope used.

Installation involves simple mounting