7551 / 7552 limit switch

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7551 / 7552 limit switch

7551 / 7552 limit switch

7551 and 7552 limit switches are designed for controlling complex production equipment. As they are auxiliary devices, they act on a power interface. The choice of materials, technical solutions and large size make these limit switches ideal for use in strongly aggressive environments where they are exposed to the most severe operating conditions, ensuring excellent performance throughout the entire service life.


Features

7551 and 7552 limit switches are equipped with 4 fastening holes and 3 outputs for cable clamps to reduce installation time and facilitate wiring operations.

Materials

The enclosure made of die-cast aluminum is resistant to any violent impact, chemical aggression and rust, while the bushings made of sinterized material eliminate the need for any routine maintenance operations on the head, since they are also made of impact-resistant material.

Standards - Labelling - Certification

- Conformity to EU Directives:
2006/95/CE: Low Voltage Directive
2006/42/CE: Machinery Directive
- Conformity to standards:
EN 60204-1: Safety of machinery - Electrical equipment of machines
EN 60947: Low-voltage switchgear and controlgear
EN 60947-5-1: Low-voltage switchgear and controlgear - Control circuit devices and switching elements - Electromechanical control circuit devices
EN 60529: Degrees of protection provided by enclosures
- Labelling and certification: CE

Basic technical specifications

- Storage ambient temperature: -40°C/+70°C
- Operational ambient temperature: -25°C/+70°C
- Protection degree: IP 65
- Insulation category: Class I
- Cable entry: M20 cable clamp
- Operational frequency: Max. 3,600 operations/hour
- Labelling and certification: CE

Technical specifications of microswitches

- Utilization category: AC 15
- Rated operational current: 3 A
- Rated operational voltage: 250 V
- Rated thermal current: 10 A
- Rated insulation voltage: 300 V
- Service life: 1,000,000 operations
- Terminals acc. to: EN 50013
- Connections: Screw-type terminals
- Wires: 1x2.5 mm2, 2x1.5 mm2
(UL - (c)UL: Use 60°C or 75°C copper (CU) conductor and wire 16-18 AWG)
- Tightening torque: 0.8 Nm
- Certification: CE X
PRSL0036XX snap-action switch has 1NO+1NC change-over contacts with 2 connecting terminals each.
All NC contacts are of the positive opening type.

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