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Thiim UMCA Multi-Function Voltage Relay for AC and DC voltage


  • For AC and DC voltage
  • Balanced input for noise immunity
  • Input voltage range 50mV…500V
  • 11 programmable input ranges
  • 4 programmable times for power up reset
  • 4 programmable time ranges
  • Separate adjustable ON and OFF delay
  • Relay function can be inverted
  • Adjustable upper or lower limit and differential
  • Latch function available
  • LEDs indicate the state of the input
  • LEDs indicate the timing function
  • LED indicates the state of the relay
  • SMD - technic
  • 0…1V DC control output for full scale (Only in 45 mm. housing)


The voltage relay is designed with a microcontroller. With programmable range, function and timing it can be programmed to cover a wide range of applications. The voltage to be monitored is fed into a resistive divider and, for extreme noise immunity, amplified in a balanced amplifier, rectified, averaged, and compared with a preset reference voltage. AC and DC voltages between 50mV and 500V can be measured directly by means of a voltage transformer or a resistive divider the range can be extended without limits.

For applications in DC systems a special feature of the balanced amplifier permits voltages against the negative supply line to be measured directly without DC separation between input and supply.

Level comparator used with transducers and transmitters. Over or undervoltage monitoring of loads, batteries, generators, mains etc.

Additional Information

Manufacturer Thiim
Product Name / Options Price (ex VAT)
Thiim UMCA-B110-DA3C Voltage Relay 35 mm. (without DC output) 1 C/O - 99-140 VAC - 26345 Call for Prices

Thiim UMCA-B024-DA3C Voltage Relay 35 mm. (without DC output) 1 C/O - 20 - 28 VAC - 25643 Call for Prices

Thiim UMCA-B110-DA4C Voltage Relay Single Phase AC/DC -45 mm. (with 0 - 1 VDC output) - 99-140 VAC - 26347 Call for Prices