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Product Groups
High Current Terminal Block Relays
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
XRU1H Series
  • 14 mm (0.55") Wide
  • Pluggable Relay Allows for Field Replacement
  • Convenient Plug-In Bridge System
  • LED Status Indication
  • DIN Rail Mount
  • IP67 Protected Optical Electronics
  • Wear-Resistant and Bounce-Free Switching
  • Insensitive to Shock and Vibration
  • Integrated Protection Circuit
  • Zero Voltage Switch at AC Output
  • Environmentally Friendly, Cadmium Free Contact Material
  • Electrical Isolation Between Input and Output
 Manuals (contact with email : [email protected])


The new XR Series relays include productsdesigned to meet high continuous currentand/or long electrical service lifeapplications. The XR Series relays are plugininterfaces that connect to basic terminalblocks that use screw connectiontechnology. Overall width is 14 mm (0.55").These relays are best suited for applicationsthat require higher continuous load currentsthan miniature relays can carry and switch.They can withstand inrush currents or briefoverloads without damage, and allow forcontinuous load currents of up to 10 A. TheXR Series Relay boasts an average servicelife of the contacts that is two or three timesthe normal life of a less powerful relay,resulting in service cost savings.

Power Terminal Block
The XRAPLCESK power terminal block hasthe same shape as the relay modules andis used to feed in the bridging potentials.The nominal current is 32 A. When thetotal current is less than or equal to 6 A,supply can take place directly at theconnecting terminal blocks of one of theconnected relays.

End Cover
The XRAATPBK end cover is required at thestart and stop of a relay strip. It can also beused for visual separation of groups ofrelays as well as separating relays withvoltages greater than 250V and separatingneighboring bridges with different potentials.It is equipped with pre-scored break outpoints at the bridging positions so thatindividual bridges can be passed through asneeded. It may also be necessary to use theend cover between adjacent relays whenthree phases (L1, L2, L3) are used on thecontact side of the relay.

The XRAFBST colored, insulated pluginbridge system reduces wiring time by up to70% compared to conventionally wiredrelays. The XRAFBST2, 2-position bridges,are suited for bridging a smaller number ofrelays and total currents < 6A. When a circuitis supplied from both sides, the circuit canbe opened at any point, allowing all othermodules to continue being supplied at thesame time. The XRAFBST500 allow up to 80modules to be bridged at one time. Ifbridges with different potentials meet inneighboring modules, the end coverXRAATPBK should be used. All bridges areequipped with a groove for removal with astandard screwdriver.

Connection Data:
   Rigid Solid AWG (mm2): 26 to 14 (0.14 to 2.5)
   Flexible Stranded AWG (mm2): 26 to 14 (0.14 to 2.5)
Input Voltage:
   XRU1H24U: 24 Vac/Vdc
   XRU1H120U: 120 Vac/110 Vdc
Typical Input Current:
   XRU1H24U: 17.5 mA
   XRU1H120U: 4.5 mA (120 Vac)/4.2 mA (110 Vdc)
Typical Response Time:
   XRU1H24U: 8 mS
   XRU1H120U: 7 mS
Typical Release Time: 10 mS
Input Protection: Bridge rectifier
Contact Type: Single contact, SPDT
Contact Material: AgNi
Max Switching Voltage: 250 Vac/Vdc1
Min Switching Voltage: 12 Vac/Vdc
Limiting Continuous Current: 10 A (6 A)2
Max Inrush Current: 30 A (300 mS)
Min Switching Current: 100 mA
Min Switching Power: 1.2 W
Test Voltage I/O: 4 kV, 50 Hz, 1 min
Ambient Temp Range: -20 to 60°C (-4 to 140°F)
Rated Operating Mode: 100% Operating Factor
Inflammability Class: V0, in Accordance with UL 94
Mechanical Service Life: 3 x 107 cycles
1 The separating plate, XRAPLCESK, shouldbe installed for voltages greater than 250V(L1, L2, L3) between identical terminal pointsof adjacent modules. Potential bridging isthen possible with the XRAFBST bridgesystem.
2 The current rating for the normally opencontact (#14) is 10 A. The current rating forthe normally closed contact (#12) is 6 A andcan be increased to 10 A by bridging the two#12 contact connections.
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