Overload relays for standard applications

The following optional accessories are available for the 3RB20 and 3RB21 solid-state overload relays:

• One terminal bracket each for the overload relays size S00 and S0 (sizes S2 to S12 can be installed as stand-alone installation without a terminal bracket)
• Mechanical RESET (for all sizes)
• Cable release for resetting devices which are difficult to access (for all sizes)
• Sealable cover (for all sizes)
• Terminal covers for sizes S2 to S10/S12
• Box terminal blocks for sizes S6 and S10/S12