Siemens 3RH2122-1AB00 10 AMP AC control relay with 2 normally open and 2 normally closed contacts and a 24v50/60Hz coil. This Sirius 4-pole control relay can be outfitted with additional 4 pole auxiliary contact blocks in all contact arrangements (4 N.O. , 3 N.O./1 N.C., 2 N.O./2 N.C., 1 N.O./3 N.C., 4 N.C.) for a total of 8 operating poles. This relay is a direct electrical and physical replacement for the obsolete 3RH1122-1AB00 though any existing 3RH1911 auxiliaries, varistors, RC elements or diodes would also need to be replaced as they will not mount to this new style Siemens relay.
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2 normally open
2 normally closed
|AMP Rating||10 AMP UL rated|
The 3RH2 contactor relays are suitable for use in any climate. They are finger-safe according to EN 50274. The devices with ring lug terminal connection comply with degree of protection IP20 when fitted with the related terminal cover.
The 3RH2 contactor relays can be expanded by up to four contacts by the addition of snap-on auxiliary switch blocks. The auxiliary switch block can easily be snapped onto the front of the contactors. The auxiliary switch block has a centrally positioned release lever for disassembly. The contactor relays with 4 contacts according to EN 50011, with the identification number 40E, can be extended with 80E to 44E auxiliary switch blocks to obtain contactor relays with 8 contacts according to EN 50011. These auxiliary switch blocks (3RH29 11–1GA..) cannot be combined with contactor relays with identification numbers 31E and 22E.