Overload Relays 3RB2 Solid-State Overload Relays 3RB22, 3RB23 for high-feature applications Technical specifications 1) On request. 2) Current measuring modules size S6 and S10/S12 with busbar connection in conjunction with cover. 33 Siemens · 2009 Type – Overload relay of complete system Size 3RB22, 3RB23 S00 ... S10/S12 General data Trips in the event of Overload, phase failure and phase unbalance (> 40 % acc. to NEMA), + ground fault (with corresponding function expansion module) and activation of the thermistor motor protection (with closed PTC sensor circuit) Trip class acc.
to IEC 60947-4-1 CLASS 5, 10, 20 and 30 adjustable Phase failure sensitivity Yes Overload warning Yes, from 1.125 x I e for symmetrical loads and from 0.85 x I e for unsymmetrical loads Reset and recovery • Reset options after tripping • Recovery time - For automatic RESET min - For manual RESET min - For remote RESET min Manual, automatic and remote RESET - For tripping due to overcurrent: 3 (stored permanently) - For tripping by thermistor: time until the motor temperature has fallen 5 K below the response temperature - For tripping due to a ground fault: no automatic RESET - For tripping due to overcurrent: 3 (stored permanently) - For tripping by thermistor:
time until the motor temperature has fallen 5 K below the response temperature - For tripping due to a ground fault: immediately - For tripping due to overcurrent: 3 (stored permanently) - For tripping by thermistor: time until the motor temperature has fallen 5 K below the response temperature - For tripping due to a ground fault: immediately Features • Display of operating state on device • TEST function • RESET button • STOP button Yes, with 4 LEDs:
Green "Ready" LED, red "Ground Fault" LED, red "Thermistor" LED and red "Overload" LED Yes, test of LEDs, electronics, auxiliary contacts and wiring of control circuit by press- ing the button TEST/RESET / self-monitoring Yes, with the TEST/RESET button No Explosion protection – safe operation of motors with "increased safety" type of protection EC type test certificate number acc. to directive 94/9/EC (ATEX) PTB 05 ATEX 3022 II (2) GD Ambient temperatures • Storage/transport °C • Operation °C • Temperature compensation °C • Permissible rated current - Temperature inside control cabinet 60 °C % - Temperature inside control cabinet 70 °C % -40 ... +80 -25 ...
+60 +60 100 1) Repeat terminals • Coil repeat terminal • Auxiliary contact repeat terminal Not required Not required Degree of protection acc. to IEC 60529 IP202) Touch protection acc. to IEC 61140 Finger-safe2) Shock resistance with sine acc. to IEC 60068-2-27 g/ms 15/11 Electromagnetic compatibility (EMC) – Interference immunity • Conductor-related interference - Burst acc. to IEC 61000-4-4 kV (corresponds to degree of severity 3) - Surge acc. to IEC 61000-4-5 kV (corresponds to degree of severity 3) • Electrostatic discharge acc. to IEC 61000-4-2 kV (corresponds to degree of severity 3) • Field-related interference acc.
to IEC 61000-4-3 V/m (corresponds to degree of severity 3) 2 (power ports), 1 (signal ports) 2 (line to earth), 1 (line to line) 8 (air discharge), 6 (contact discharge) 10 Electromagnetic compatiblity (EMC) – emitted interference Degree of severity A acc. to EN 55011 (CISPR 11) and EN 55022 (CISPR 22) Resistance to extreme climates – air humidity % 100 Dimensions See dimensional drawings Installation altitude above sea level m Up to 2000 Mounting position Any Type of mounting Evaluation module: stand-alone installation, current measuring module size S00 to S3: stand-alone installation, current measuring module size S6 and S10/S12: stand-alone installation and moun- ting onto contactors