Relay (electric relay)

The Siemens SIRIUS 3RH2911-1HA03 is a front-mounted auxiliary switch with three normally closed contacts and screw terminal connections. It can be directly snapped onto the front of the 3RT2.1～3RT2.4 (S00～S3) contactors and the 3RH2 contact relay to expand the control signal points.

The Siemens SIRIUS 3RH2911-1HA02 is a front-mounted auxiliary switch with two normally closed contacts and screw terminal connections. It can be directly snapped onto the front of the 3RT2.1～3RT2.4 (S00～S3) contactors and the 3RH2 contact relay to expand the control signal points.

The Siemens SIRIUS 3RH2911-1HA01 is a front-mounted auxiliary switch with one normally closed contact and one screw terminal connection. It can be directly snapped onto the front of the 3RT2.1～3RT2.4 (S00～S3) contactor and the 3RH2 contact relay to expand the control signal points.

The Siemens SIRIUS 3RH2911-1GA40 is a front-mounted 4-pole auxiliary switch with 4 normally open (4 NO) contacts, physical coding, and screw terminal connection. According to EN 50011, it can only be used with 3RH2140 and 3RH2440 contact relays to expand to an 8-pole contact combination.

The Siemens SIRIUS 3RH2911-1GA31 is a front-mounted 4-pole auxiliary switch with 3 normally open and 1 normally closed (3 NO + 1 NC) contacts. It has a physical code and screw terminal connection. According to EN 50011, it can only be used with 3RH2140 and 3RH2440 contact relays to expand to an 8-pole contact combination.

The Siemens SIRIUS 3RH2911-1GA22 is a front-mounted 4-pole auxiliary switch with 2 normally open and 2 normally closed (2 NO + 2 NC) contacts. It has a physical code and screw terminal connection. According to EN 50011, it can only be used with 3RH2140 and 3RH2440 contact relays to expand to an 8-pole contact combination.

The Siemens SIRIUS 3RH2911-1GA13 is a front-mounted 4-pole auxiliary switch with 1 normally open and 3 normally closed (1 NO + 3 NC) contacts. It has a physical code and screw terminal connection. According to EN 50011, it can only be used with 3RH2140 and 3RH2440 contact relays to expand to an 8-pole contact combination.

The Siemens SIRIUS 3RH2911-1GA04 is a front-mounted 4-pole auxiliary switch with 4 normally closed (4 NC) contacts, physical coding, and screw terminal connection. According to EN 50011, it can only be used with 3RH2140 and 3RH2440 contact relays to expand to an 8-pole contact combination.

The Siemens SIRIUS 3RH2911-1FC22 is a pre-positioned auxiliary switch with identification code 22 U. It has 2 normally open and 2 normally closed (2 NO + 2 NC) contacts. Both normally open contacts are pilot-operated, and both normally closed contacts are delayed. It uses screw terminal connections and is compatible with 3RT2 contactors and 3RH2 contact relays to meet timing interlocking requirements.

The Siemens SIRIUS 3RH2911-1FB22 is a pre-positioned auxiliary switch with identification code 11 U. It has 2 normally open and 2 normally closed (2 NO + 2 NC) contacts, including 1 set of pilot normally open and 1 set of delayed normally closed contacts. It uses screw terminal connections and is compatible with 3RT2 contactors and 3RH2 contact relays to meet timing interlocking requirements.

The Siemens SIRIUS 3RH2911-1FB11 is a pre-positioned auxiliary switch with identification code 11 U. It has one normally open and one normally closed (1 NO + 1 NC) contact. The normally open contact is the pilot contact, and the normally closed contact is the delay contact. It is connected via screw terminals and is compatible with 3RT2 contactors and 3RH2 contact relays to meet timing interlocking requirements.

The Siemens SIRIUS 3RH2911-1FA22 is a 4-pole front-mounted auxiliary switch with 2 normally open and 2 normally closed contacts (2 NO + 2 NC), for a total of 4 sets of contacts. The current path is NO, NC, NC, NO in sequence. It is connected by screw terminals and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-1FA04 is a 4-pole front-mounted auxiliary switch with 4 normally closed (4 NC) contacts. The current path is in the order of NC, NC, NC, NC. It is connected by screw terminals and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-1DA20 is a side-mounted auxiliary switch with 2 normally open (2 NO) contacts and screw terminal connections. It is specifically designed for side mounting of 3RT2.1 (S00) contactors, without occupying the front space of the contactor, and is suitable for control circuits that require the front position to be retained.

The Siemens SIRIUS 3RH2911-1DA11 is a side-mounted auxiliary switch with one normally open and one normally closed (1 NO + 1 NC) contact and screw terminal connection. It is specifically designed for side mounting of 3RT2.1 (S00) contactors, without occupying the front space of the contactor, and is suitable for control circuits that require the front position to be retained.