With the HSD series, MTM Power offers primary switched DIN rail modules with DC input voltage. The devices are designed for operation in the input voltage range from 20 to 72 V(DC) and enable solutions for various power supply tasks in the low power range. The "thermoselective vacuum encapsulation" protects against dirt and moisture and ensures robustness against mechanical influences such as shock and vibration. The 30 W modules are available with single output voltages of 12 V, 24 V and 48 V. The devices have an insulation resistance of 3.3 kVAC between The devices are short-circuit and open-circuit proof and operate in a temperature range of -25 to +70 °C.