Reliable protection for machines and plants

SIRIUS 3RV20 motor starter protectors protect your motor reliably and economically.

• Available in sizes S00, S0, S2 and S3 from 0.11 to 100 A
• Bimetals with long-term stability
• Provides overload and short-circuit protection

Protects your motor with integral overload relay function. This gives the motor starter protector the option of automatic reset in the event of overload, which supports the trouble-free operation of your plant and increases productivity.

• Available in sizes S00, S0, S2 and S3 from 0.11 to 100 A
• Motor starter protector does not shut down in the event of an overload
• Overload is signaled by laterally mounted 1NO+1NC auxiliary contacts
• The load feeder must be shut down via a downstream contactor (resetting of the auxiliary contacts)

Overload relay can be set to "automatic reset", which eliminates the need to open the control panel. Motor starter protector provides short-circuit protection. Overload and short-circuit protection are carried out separately and can also be signaled separately.

• Available in sizes S00, S0, S2 and S3 from 0.11 to 100 A

The SIRIUS 3RV24 motor starter protector provides reliable transformer protection.

• Available in sizes S00, S0 and S2 from 0.11 to 65 A
• Optimized for the protection of transformers
• Response value of the short-circuit release 20 x I_n

The circuit breakers for use in UL markets. SIRIUS 3RV27 and 3RV28 can be used according to UL 489/CSA C22.2 No.5.

• Use as "branch circuit protection device" (BCPD) acc. to UL/CSA
• For fuseless protection of systems, motors and non-motor loads (e.g. transformers)
• In sizes S00 and S0 up to 22 A, switching capacity 65 kA or 50 kA at 480 Y/277 V
• In size S3 up to 70 A, switching capacity 65 kA at 480Y/277V, or up to 30 A 65 kA at 480 V
• Type testing in accordance with IEC 60947-2
• Standardized configuration of control panels in accordance with IEC and UL/CSA
  

Tip:

Now also insertable in 3RV29 infeed system.

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