Overload relays for standard applications

The following optional accessories are available for the 3RU21 thermal overload relays:

• Size-specific terminal support for stand-alone installation of overload relays sizes S00 and S0, also optionally with spring-type terminals.
• Mechanical RESET (for all sizes)
• Cable release for resetting devices which are difficult to access (for all sizes)
• Electrical remote RESET module in three voltage versions (for all sizes)
• Sealable cover (for all sizes)
• Terminal covers for devices with screw terminals (box terminals) with ring terminal lug connection