Kraus & Naimer CA10 A212/TRA101 Changeover Cam Switch, 3-Pole, 20 A, in Enclosure (KE01)

Kraus & Naimer CA10 A212/TRA101 Changeover Cam Switch, 3-Pole, 20 A, in Enclosure (KE01)

Kraus & Naimer CA10 A212/TRA101 is a 3-pole, 20 A changeover cam switch with a centre OFF position. The switch has positions 1-0-2, a switching angle of 60° and 3 levels. It is supplied as an enclosed (TRA) version in a KE01 enclosure (IP65) with an I handle. Front plate code F071; size type S0. Rated insulation voltage is 690 V (AC 50/60 Hz) and rated impulse withstand voltage is 6 kV (switch), 4 kV (switch disconnector). AC-21A rated operational current is 20 A over 20–690 V; three-phase AC-3 rated power (380–440 V) is 5.5 kW; AC-23A rated power (380–440 V) is 7.5 kW. Maximum fuse rating gG 25 A; rated short-time withstand current 140 A (1 s); power loss per pole 0.9 W. The terminals accept stranded conductors up to 2 x 2.5 mm²; tightening torque is 0.6 Nm (5 lb-in); operating temperature is -25…+60 °C. It is used to transfer a load between two circuits or sources, with the centre (0) position breaking the circuit.

Size TypeS0
Number of Poles3P
SeriesCA10
Function CodeA212
Switch FunctionEnversör (1-0-2)
Switch Positions1-0-2
Number of Positions3
Switching Angle60° °
Number of Levels3
Front Plate CodeF071
Rated Current20 A
Conventional Free Air Thermal Current (Ith)20 A
Ambient temperature for rated current55 °C (24 hours, tepe 60 °C)
Conventional Enclosed Thermal Current (Ithe)20 A
Rated Insulation Voltage (Ui)690 V (AC 50/60 Hz)
Rated Impulse Withstand Voltage (Uimp)6 kV (circuit breaker); 4 kV (switch-disconnector)
Overvoltage categoryIII
Pollution Degree3
Rated Operational Current AC-15 (Ie)220–240 V: 6 A; 380–440 V: 4 A
Rated Operational Current AC-20A (Ie)690 V: 20 A
Rated Operational Current AC-21A (Ie)20–690 V: 20 A
Rated Operational Current AC-22A (Ie)220–500 V: 20 A; 660–690 V: 20 A
Rated Operational Power AC-2 (Pe)3-phase: 220–240 V 4 kW; 380–440 V 7.5 kW; 500 V 10 kW; 660–690 V 10 kW
Rated Operational Power AC-3 (Pe)3-phase: 220–240 V 3 kW; 380–440 V 5.5 kW; 500 V 5.5 kW; 660–690 V 5.5 kW. 1-phase: 110–120 V 0.6 kW; 220–240 V 2.2 kW; 380–440 V 3 kW
Rated Operational Power AC-4 (Pe)3-phase: 220–240 V 0.55 kW; 380–440 V 1.5 kW; 500 V 1.5 kW; 660–690 V 1.5 kW. 1-phase: 110–120 V 0.3 kW; 220–240 V 0.75 kW; 380–440 V 1.5 kW
Rated Operational Power AC-23A (Pe)3-phase: 220–240 V 3.7 kW; 380–440 V 7.5 kW; 500 V 7.5 kW; 660–690 V 7.5 kW. 1-phase: 110–120 V 0.75 kW; 220–240 V 2.5 kW; 380–440 V 3.7 kW
Maximum Fuse CurrentgG 25 A
Rated Short-Time Withstand Current (Icw)140 A (1 s)
Breaking Capacity220–240 V: 150 A; 380–440 V: 150 A; 660–690 V: 80 A
Power Loss per Pole0.9 W
Solid Conductor Cable Cross-Section0.5–2.5 mm2
Stranded Conductor Cable Cross-Section2x2.5 mm2
Flexible Conductor Cross-Section0.75–2.5 mm2
Conductor Cross-Section with Ferrule0.5–2.5 mm2
Cable section (AWG/MCM)AWG 14 (flexible); AWG 12 (solid or stranded)
Conductor MaterialCopper only (individual strands may be tinned or silver-plated; conductor ends must not be soldered)
Tightening Torque0.6 Nm (5 lb-in)
Recommended Screw DriverPozidriv/Phillips PH1; slotted 0.8 x 4 mm (DIN 5264)
Contact TypeRigid bridging link
Contact MaterialSilver

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