Solid State Relay 3RF21, 3RF20

Solid State Relay 3RF21, 3RF20, 3RF22

Order No: 3RF20/21/22..-…..

SIRIUS 3RF2 solid-state relays are suitable for surface mounting on existing cooling surfaces. Mounting is quick and easy, involving just two screws. The special technology of the power semiconductor ensures there is excellent thermal contact with the heat sink. Depending on the nature of the heat sink, the capacity reaches up to 88 A on resistive loads.

The solid-state relays are available in 3 different widths:

• 3RF21 single-phase solid-state relay with a width of 22.5 mm
• 3RF20 single-phase solid-state relay with a width of 45 mm
• Three-phase 3RF22 solid-state relay with a width of 45 mm

The 3RF21 and 3RF22 solid-state relays can be expanded with various function modules to adapt them to individual applications.

3RF21

Single-phase solid-state relays without heat-sink with a width of 22.5 mm. With its compact design and a width of just 22.5 mm, which stays the same even at currents of up to 88 A, the 3RF21 solid-state relay offers an ultra small footprint. The logical connection method, with the power infeed from above and load connection from below, ensures a clear and tidy control cabinet.

3RF20

Single-phase solid-state relays (without heat sink) in 45 mm width. The solid-state relays with a width of 45 mm provide for connection of the power supply lead and the load from above. This makes it easy to replace existing solid-state relays in existing arrangements. The connection of the control cable also saves space in much the same way as the 22.5 mm design, as it is simply plugged on.

3RF22

Three-phase solid-state relays (without heat sink) in 45 mm width. With its compact design and a width of just 45 m, which stays the same even at currents of up to 55 A, the 3RF22 solid-state relay offers an ultra small footprint. Only two fixing screws are required for fast and safe mounting onto cooling surfaces. The logical connection method, with the power infeed from above and load connection from below, ensures a clear and tidy control cabinet.

Important features:

• LED indicators
• Variety of connection methods
• Plug-in control connection
• Degree of protection IP20
• Zero-point switching
• Two- or three-phase controlled