New Industry Products

20A DIN Rail Mount Redundancy Modules

April 30, 2019 by Scott McMahan

TDK Corporation introduced the DRM40 series DIN rail mount redundancy modules. The two 20A, 10Vdc to 30Vdc rated inputs can be connected to provide a 20A redundant configuration or can use the load balancing option to deliver a 40A output. For capacitive and inductive loads, the DRM40 supports an additional 50% peak load for four seconds. The use of low-loss MOSFET reverse current protection devices reduces the internal voltage drop to 200mV.

Applications for the modules include industrial process control, test and measurement equipment, factory automation, and battery chargers.

If the input currents are unbalanced, the DRM40 front panel mounted LED is off. When the input voltages are adjusted and the load current is shared equally, the LED is illuminated.

In addition to the LED indicator, the DRM40 has two isolated DC Good PhotoMOS relays to register that each input voltage is between the limits of 10Vdc and 30Vdc. Two front panel mount DC Good LEDs offer visual indication. For cost-sensitive applications, the DRM40B features identical electrical performance without the current balance and DC Good functions.

The DRM40 series comes in a compact and rugged metal enclosure measuring 35mm x 124mm x 125mm (W x H x D) and is suitable for mounting on TS-35/7.5 and TS-35/15 DIN rails.

The modules have an operating ambient temperature of -40°C to +70°C with no derating, and both models are safety certified to IEC/EN/UL/CSA 60950-1, IEC/EN/UL/CSA 62368-1, UL 508 and are CE marked for the Low Voltage, EMC and RoHS Directives.

(Click on chart to enlarge)

Features and Benefits

  • 10Vdc to 20Vdc Rated Inputs
  • 20A Output in Redundant Configuration
  • 40A Output with Load Balancing Option
  • Low 200mV Voltage Drop
  • Current Balance Indicator Option
  • Isolated Alarm Signaling Option
  • 50% Peak Current Rating
  • CE marked for Low Voltage, EMC, and RoHS
  • Safety Certified to IEC/EN/UL/CSA 60950-1, IEC/EN/UL/CSA 62368-1, UL 508