Thermal motor protector Temperature limiter Thermal cut-out 10 11 12 T21 Applications - Motors - Transformers - Coils - Electronics, sensors Benefits - Temperature and current sensitive or only temperature sensitive - Small dimensions - High power ratingTechnical data 1) control type T10A / E T10B / G T12A / E T21A / E T21B / G ratings T11A / E version normally closed normally open normally closed normally closed normally open rated current at 250 V 50/60 Hz ( power factor 0.95 / 0.6 ) 2.5 A / 1.6 A 2.0 A / 1.6 A 6.3 A / 2.5 A 10.0 A / 2.0 A 3.5 A / 2.0 A switching cycles 10,000 max. current at 250 V 50/60 Hz ( power factor 0.95 ) 10.0 A 12.0 A 20.0 A switching cycles under max. current 300 300 1,000 2) temperature rating Ta ( steps in 5 K ) (50) 70 C... 180 C 80 C ... 160 C feature of automatic action 1.C.M, 2.C, 3.C 1.C, 3.C 1.B, 2.C, 3.C tolerances Standard: 5 K contact resistance ( incl. wire of 100 mm ) < 50 m 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 3) VDE EN 60730-1 / -2-2 / -2-3 /-2-9 4) approvals UL UL 2111 / UL 873 4) CSA C22.2 No. 77 / C22.2 No. 24 1) 3) available with 3K tolerances and smaller hysteresis different power rating 2) 4) T10 max. Ta 160C on demand Standard wire (length 100 10 mm, stripped 6 1 mm) temperature operating diameter cross section UL lead code max. voltage max. insulation diameter style 2 L300 1.57 mm AWG24 / 0.21 mm 2 L310 150 C 300 V 1.80 mm AWG20 / 0.48 mm 3398 1) 2 2.15 mm AWG18 / 0.96 mm stranded L320 2 white L330 0.90 mm AWG24 / 0.24 mm 2 L340 200 C 600 V 1.26 mm AWG20 / 0.62 mm 3557 1) 2 1.50 mm AWG18 / 0.96 mm L350 L400 1.40 mm AWG24 / 0.51 mm 300 V 3398 150 C 1.65 mm AWG20 / 0.81 mm solid L410 yellow L430 1.21 mm AWG24 / 0.51 mm 200 C 300 V 1332 AWG20 / 0.81 mm L440 1.71 mm 1) T21 Standard insulation control drawing technical nc no code illustration approvals type dimensions ( mm ) speci cation T10 A B U250 shrink cap T11, T12 A B potted VDE, UL Attention: Ta max. 155 C T21 A B U256 different dimensions for T21 T10 A B cap of PPS U174 VDE, UL potted T11, T12 A B