Kraus & Naimer CA10B A253 6-Step Cam Switch without OFF, 2-Pole, 20 A, 64 x 64 mm Front Plate
- Brand: Kraus & Naimer
- SKU: CA10B WAA253
- MPN: CA10B WAA253
- Model: 20 A
- Price: 3501.00 TRY + VAT · incl. VAT 4201.20 TRY
- Availability: Made to order
- Standard Step Switches
- Kraus & Naimer Standard Step Switches
- Selection guide: Standard Step Switches Selection Guide
Kraus & Naimer CA10B A253 is a 2-pole step cam switch with 6 steps and no OFF position; thermal current 20 A, front plate size 64 x 64 mm. The handle of the CA10B A253 turns in 60° steps through the positions 1-2-3-4-5-6, and each position engages a different contact arrangement; number of levels 6, front plate code F079. It is used in multi-position selection and control circuits. For CA10B A253, rated insulation voltage Ui is 690 V, AC-21A rated current is 20 A, maximum fuse rating is gG 25 A and rated short-time withstand current Icw is 140 A (1 s). Single-phase AC-3 motor rating is 2.2 kW at 220–240 V and 3 kW at 380–440 V. CA10B A253 is connected by screw terminals: flexible conductors of 0.75–2.5 mm², conductors with ferrule of 0.5–2.5 mm² and stranded conductors of 2 x 2.5 mm² can be connected; tightening torque is 0.6 Nm.
| Size Type | S1 |
|---|---|
| Number of Poles | 2P |
| Cam Switch Position Count | 6 Positions |
| Series | CA10B |
| Function Code | A253 |
| Switch Function | Stepped Without Off (1-2-3-4-5-6) |
| Switch Positions | 1-2-3-4-5-6 |
| Number of Positions | 6 |
| Switching Angle | 60° ° |
| Number of Levels | 6 |
| Front Plate Code | F079 |
| Front Plate Size (A x B) | 64 x 64 mm |
| Rated Current | 20 A |
| Conventional Free Air Thermal Current (Ith) | 20 A |
| Ambient temperature for rated current | 55 °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 category | III |
| Pollution Degree | 3 |
| 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 Current | gG 25 A |
| Rated Short-Time Withstand Current (Icw) | 140 A (1 s) |
| Breaking Capacity | 220–240 V: 150 A; 380–440 V: 150 A; 660–690 V: 80 A |
| Power Loss per Pole | 0.9 W |
| Solid Conductor Cable Cross-Section | 0.5–2.5 mm2 |
| Stranded Conductor Cable Cross-Section | 2x2.5 mm2 |
| Flexible Conductor Cross-Section | 0.75–2.5 mm2 |
| Conductor Cross-Section with Ferrule | 0.5–2.5 mm2 |
| Cable section (AWG/MCM) | AWG 14 (flexible); AWG 12 (solid or stranded) |
| Conductor Material | Copper only (individual strands may be tinned or silver-plated; conductor ends must not be soldered) |
| Tightening Torque | 0.6 Nm (5 lb-in) |
| Recommended Screw Driver | Pozidriv/Phillips PH1; slotted 0.8 x 4 mm (DIN 5264) |
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