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7551-7552 Position limit switches
Cross position limit switches designed for controlling the movement of overhead travelling cranes, hoists and complex machine tools. The choice of materials and technical solutions adopted enable use in harsh operating conditions.
Features
- Designed to guarantee excellent performance in the most challenging operating conditions.
- Rods with 4 maintained positions every 90°.
- 4 fixing holes.
- Positive opening NC contacts for safety functions.
- Mechanical life of switches: 1 million operations.
- Operation frequency: 3600 operations/hour max.
- IP protection degree: 7551-7552 are classified IP 66 with specific cable clamp M20.
- Extreme temperature resistance: -40°C to +70°C.
- It features die-cast aluminum alloy enclosure, with bushings made of sinterized material and head made of zama to resist any violent impact, chemical aggression and rust and reduce the need for routine maintenance operation on the head.
- All materials and components used are wear resistant and guarantee protection of the unit against water and dust.
Options
- 4 snap action switches with 1NO+1NC change-over contacts or slow action switches with 1NC contact.
- 3 outputs for cable clamps to reduce installation time and make wiring easier.
Certifications
- CE marking.
GENERAL TECHNICAL SPECIFICATIONS
| Ambient temperature | Storage -40°C/+70°C |
|---|---|
| Operational -40°C/+70°C | |
| IP protection degree | IP 66 max. with specific cable gland M20 (not supplied) |
| Insulation category | Class I |
| Operation frequency | 3600 operations/hour max |
| Cable entry | M20 |
TECHNICAL SPECIFICATIONS OF THE SWITCHES
| Utilisation category | AC 15 |
|---|---|
| Rated operational current | 250 Vac |
| Rated operational voltage | 3 A |
| Rated thermal current | 10 A |
| Rated insulation voltage | 300 Vac |
| Mechanical life | 1x106 operations |
| Connections | Screw-type terminals |
