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The new XR Series relays include products designed to meet high continuous current and/or long electrical service life applications. The XR Series relays are plugin interfaces that connect to basic terminal blocks that use screw connection technology. Overall width is 14 mm (0.55'). These relays are best suited for applications that require higher continuous load currents than miniature relays can carry and switch. They can withstand inrush currents or brief overloads without damage, and allow for continuous load currents of up to 10 A. The XR Series Relay boasts an average service life of the contacts that is two or three times the normal life of a less powerful relay, resulting in service cost savings.
Power Terminal Block
The XRAPLCESK power terminal block has the same shape as the relay modules and is used to feed in the bridging potentials. The nominal current is 32 A. When the total current is less than or equal to 6 A, supply can take place directly at the connecting terminal blocks of one of the connected relays.
The XRAATPBK end cover is required at the start and stop of a relay strip. It can also be used for visual separation of groups of relays as well as separating relays with voltages greater than 250V and separating neighboring bridges with different potentials. It is equipped with pre-scored break out points at the bridging positions so that individual bridges can be passed through as needed. It may also be necessary to use the end cover between adjacent relays when three phases (L1, L2, L3) are used on the contact side of the relay.
The XRAFBST colored, insulated plugin bridge system reduces wiring time by up to 70% compared to conventionally wired relays. The XRAFBST2, 2-position bridges, are suited for bridging a smaller number of relays and total currents < 6A. When a circuit is supplied from both sides, the circuit can be opened at any point, allowing all other modules to continue being supplied at the same time. The XRAFBST500 allow up to 80 modules to be bridged at one time. If bridges with different potentials meet in neighboring modules, the end cover XRAATPBK should be used. All bridges are equipped with a groove for removal with a standard screwdriver.
Rigid Solid AWG (mm2): 26 to 14 (0.14 to 2.5)
Flexible Stranded AWG (mm2): 26 to 14 (0.14 to 2.5)
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, should be installed for voltages greater than 250V (L1, L2, L3) between identical terminal points of adjacent modules. Potential bridging is then possible with the XRAFBST bridge system.
2 The current rating for the normally open contact (#14) is 10 A. The current rating for the normally closed contact (#12) is 6 A and can be increased to 10 A by bridging the two #12 contact connections.