Relay (electric relay)

The Siemens SIRIUS 3RH2911-2FB22 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 is connected to spring terminals and is suitable for 3RT2 contactors and 3RH2 contact relays to meet the timing interlocking requirements.

The Siemens SIRIUS 3RH2911-2FB11 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 with spring terminals and is suitable for 3RT2 contactors and 3RH2 contact relays to meet the timing interlocking requirements.

The Siemens SIRIUS 3RH2911-2FA40 is a 4-pole front-mounted auxiliary switch with 4 normally open (4 NO) contacts. The current path is NO, NO, NO, NO in sequence. It is connected with spring terminals and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

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

The Siemens SIRIUS 3RH2911-2FA04 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, with spring terminal connection. It is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-2DA11 is a side-mounted auxiliary switch with one normally open and one normally closed (1 NO + 1 NC) contact and spring 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.

The Siemens SIRIUS 3RH2911-1NF11 is a pre-positioned auxiliary switch suitable for solid-state compatible electronic circuits. It has one normally open and one normally closed contact, which can reliably switch low voltage and low current signals such as 5V/1mA. It has screw terminal connection and is compatible with 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-1MA11 is a front-mounted auxiliary switch with 1 normally open and 1 normally closed (1 NO + 1 NC) contacts and terminals marked 73/74 and 81/82. It has bottom entry and screw terminal connection, and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-1LA11 is a front-mounted auxiliary switch with 1 normally open and 1 normally closed (1 NO + 1 NC) contacts and terminals marked 73/74 and 81/82. It has top-entry wiring and screw terminal connections, and is suitable for front mounting of 3RT2 contactors and 3RH2 contact relays.

The Siemens SIRIUS 3RH2911-1HA31 is a front-mounted auxiliary switch with 4 sets of contacts (3 normally open and 1 normally closed). It uses screw terminal connections and 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 3RH2911-1HA22 is a front-mounted auxiliary switch with 4 sets of auxiliary contacts (2NO+2NC). It features screw terminal connections and can be snapped onto the front of S00 and S1 size 3RH2 auxiliary contactors and 3RT2 contactors. It is the successor to the 3RH1911-1HA22.

The Siemens SIRIUS 3RH2911-1HA21 is a front-mounted auxiliary switch with three sets of contacts: two normally open and one normally closed. It uses screw terminal connections and 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 3RH2911-1HA13 is a front-mounted auxiliary switch with 4 sets of contacts (1 normally open and 3 normally closed). It uses screw terminal connections and 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 3RH2911-1HA12 is a front-mounted auxiliary switch with three sets of contacts: one normally open and two normally closed. It uses screw terminal connections and 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 3RH2911-1HA10 is a front-mounted auxiliary switch with one normally open contact and one set of contacts. It uses screw terminal connections and 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.