The locking switches are a variant of the key switches where additionally a blockade coupled with the electric coil has been used. The blockade does not allow the key to be pulled out of the circuit breaker until the voltage is available on the coil terminals (or vice versa). With the use of a safety relay with a delayed output, this allows blocking access to the moving part until it is completely stopped. The switches have a contact status indication, blocking action and a rotating head.
| Casing material | aluminum cast or stainless steel | ISO 13849-1
| to Ple, up to category 4
|
| Degree of protection | IP67 (NEMA6)
| EN 620161
| to SIL3
|
| Cable connection | M20, ½” NPT, QC
| B10d
| 2,5 x 106 operations (100mA)
|
| Operating temperature | -25°C to +55°C
| PFHd
| 3,44 x 10-8
|
| Maximum contact current | 5A | MTTFd
| 356 years
|
| Mounting | 4x M4 screw
| EX versions
| II 2G Ex IIC T6
|
|
|
| II 2D Ex IP67 T80°C
|
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