Thermal motor protector Temperature limiter Thermal cut-out 12 13 B Applications - Motors - Transformers - Coils - Electronics, sensors - Process Automation Benefits - Non-sensitive to current - High current rating up to 30A - Manifold executions - Special low voltage executionTechnical data control B12A / E B12B / G B13N / T type ratings normally normally closed/ version normally closed open open rated current at 250 V 50/60 Hz (cos 0.95 / 0.6 ) 6.3 A / 6.0 A 10.0 A / 6.0 A 5.0 A / 1.6 A 1...100 mA (24 Vdc) switching cycles under rated current 10,000 5,000 5,000 10,000 30.0 A - max. current under failure conditions at 250 V 50/60 Hz ( cos 0.95 ) switching cycles under max. current 100 - temperature rating T ( steps in 5 K ) 70 C ... 190 C 70 C ... 160 C 70 C ... 155 C 70 C ... 160 / 155 C a tolerances standard: 5 K feature of automatic action 1.B.M, 2.B, 1.C 1.B - contact resistance ( incl. wire of 100 mm ) < 50 m 1) hysteresis 30 K 15 K dielectric strength ( standard insulation ) 2 kV - 2 2 shock / vibration testing ( similar to EN 50155 ) 400 m/s sine half wave / 100 m/s 5 Hz ... 2.000 Hz sine resistances to impregnation tight against ordinary resins and lacquers degrees of protection provided by enclosures ( EN 60529 ) IP00 suitable for use in protection category I, II - VDE / ENEC EN 60730-1 / -2-9 no approval 2) UL UL 2111 / UL 873 required to approvals voltage ratings 2) lower than CSA / cUL C22.2 No. 77 / C22.2 No. 24 42 V 2) CQC GB14536.1-1998 / GB14536.10-1996 1) 2) at the T (upper and lower) limits the hysteresis could deviate on request a Standard wire (length 100 10 mm, stripped 6 1 mm) temperature operating approx. diameter approx. cross section UL lead code 2) max. voltage max. insulation diameter style 1) 2 1.50 mm AWG24 / 0.25 mm L300 2 L310 150 C 300 V 1.82 mm AWG20 / 0.50 mm 3398 2 L320 2.10 mm AWG18 / 1.00 mm stranded white 1) 2 1.20 mm AWG24 / 0.25 mm L360 2 L370 200 C 600 V 1.60 mm AWG20 / 0.50 mm 10086 2 L380 1.80 mm AWG18 / 1.00 mm solid L410 150 C 300 V 1.66 mm AWG20 / 0.80 mm 3398 yellow L440 200 C 300 V 1.54 mm AWG20 / 0.80 mm 1332 ) 2) 1 B13 only AWG20 is recommended