Kraus & Naimer CA20 A245 7-Step Cam Switch with OFF, 1-Pole, 25 A, 48 x 48 mm Front Plate

Kraus & Naimer CA20 A245 7-Step Cam Switch with OFF, 1-Pole, 25 A, 48 x 48 mm Front Plate

Kraus & Naimer CA20 A245 is a 1-pole step cam switch with 7 steps and an OFF (0) position; thermal current 25 A, front plate size 48 x 48 mm. The handle of the CA20 A245 turns in 30° steps through the positions 0-1-2-3-4-5-6-7, and each position engages a different contact arrangement; number of levels 4, front plate code F005. It is used in multi-position selection and control circuits. For CA20 A245, rated insulation voltage Ui is 690 V, AC-21A rated current is 25 A, maximum fuse rating is gG 35 A and rated short-time withstand current Icw is 280 A (1 s). CA20 A245 is connected by screw terminals: flexible conductors of 1.5–4 mm², conductors with ferrule of 1–2.5 mm² and stranded conductors of 2 x 4 mm² can be connected; tightening torque is 1 Nm.

Size TypeS0
Number of Poles1P
Cam Switch Position Count7 Positions
SeriesCA20
Function CodeA245
Switch FunctionStepped With Off (0-1-2-3-4-5-6-7)
Switch Positions0-1-2-3-4-5-6-7
Number of Positions8
Switching Angle30° °
Number of Levels4
Front Plate CodeF005
Front Plate Size (A x B)48 x 48 mm
Rated Current25 A
Conventional Free Air Thermal Current (Ith)25 A
Ambient temperature for rated current55 °C (24 hours, tepe 60 °C)
Conventional Enclosed Thermal Current (Ithe)25 A
Rated Insulation Voltage (Ui)690 V (AC 50/60 Hz)
Rated Impulse Withstand Voltage (Uimp)6 kV
Overvoltage categoryIII
Pollution Degree3
Rated Operational Current AC-15 (Ie)220–240 V: 8 A; 380–440 V: 5 A
Rated Operational Current AC-20A (Ie)690 V: 25 A
Rated Operational Current AC-21A (Ie)20–690 V: 25 A
Rated Operational Current AC-22A (Ie)220–500 V: 25 A; 660–690 V: 25 A
Rated Operational Power AC-2 (Pe)3-phase: 220–240 V 5.5 kW; 380–440 V 11 kW; 500 V 15 kW; 660–690 V 13 kW
Rated Operational Power AC-3 (Pe)3-phase: 220–240 V 4 kW; 380–440 V 7.5 kW; 500 V 7.5 kW; 660–690 V 7.5 kW. 1-phase: 110–120 V 1.5 kW; 220–240 V 3 kW; 380–440 V 3.7 kW
Rated Operational Power AC-4 (Pe)3-phase: 220–240 V 1.5 kW; 380–440 V 3 kW; 500 V 3 kW; 660–690 V 3 kW. 1-phase: 110–120 V 0.45 kW; 220–240 V 1.1 kW; 380–440 V 2.2 kW
Rated Operational Power AC-23A (Pe)3-phase: 220–240 V 5.5 kW; 380–440 V 11 kW; 500 V 11 kW; 660–690 V 11 kW. 1-phase: 110–120 V 1.5 kW; 220–240 V 3 kW; 380–440 V 5.5 kW
Maximum Fuse CurrentgG 35 A
Rated Short-Time Withstand Current (Icw)280 A (1 s)
Breaking Capacity220–240 V: 200 A; 380–440 V: 200 A; 660–690 V: 125 A
Power Loss per Pole0.9 W
Solid Conductor Cable Cross-Section0.75–4 mm2
Stranded Conductor Cable Cross-Section2x4 mm2
Flexible Conductor Cross-Section1.5–4 mm2
Conductor Cross-Section with Ferrule1–2.5 mm2
Cable section (AWG/MCM)AWG 12 (flexible); AWG 10 (solid or stranded)
Conductor MaterialCopper only (individual strands may be tinned or silver-plated; conductor ends must not be soldered)
Tightening Torque1 Nm (9 lb-in)
Recommended Screw DriverPozidriv/Phillips PH1; slotted 0.8 x 5.5 mm (DIN 5264)

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