PULS PISA11 Circuit Protection Units
PULS PISA11 circuit protection units can be used to cost-effectively design four NEC Class 2 branch circuits using just one power supply and one PISA module.
For currents up to 2A, PISA11.401 and PISA11.402 are sufficient. For the maximum 100W NEC Class 2 limit, the specially developed PISA11.CLASS2 is ideal.
The outputs on these three PISA modules meet the requirements for NEC Class 2 circuits. In the event of an overload or system failure, the maximum current is limited for a specific time, subsequently all four outputs on the PISA module shutdown completely.
Pressing the push button on the front of the module or by applying an external control voltage turns the outputs back on. The protection mechanism is redundantly designed, so no hazardous situations can arise even in the event of an equipment defect or a single fault.
On the PISA11.CLASS2 module, the maximum output current is automatically adjusted to the supply voltage, offering the maximum possible NEC Class 2 compliant output power, regardless of the power supply voltage.
The PISA11.CLASS2 module allows a maximum 3.7A at 24V and 3.2A at 28V, ensuring that the NEC Class 2 requirements are always met in practice.
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