Kraus & Naimer C32 A273 6-Step Cam Switch without OFF, 3-Pole, 50 A, 64 x 64 mm Front Plate
- Brand: Kraus & Naimer
- SKU: C32 WAA273
- MPN: C32 WAA273
- Model: 50 A
- Price: 10251.00 TRY + VAT · incl. VAT 12301.20 TRY
- Availability: Made to order
- Standard Step Switches
- Kraus & Naimer Standard Step Switches
- Selection guide: Standard Step Switches Selection Guide
Kraus & Naimer C32 A273 is a 3-pole, 50 A step switch with 6 steps and no OFF position. The switch has positions 1-2-3-4-5-6, a switching angle of 60° and 9 levels. Front plate size 64 x 64 mm; front plate code F079; size type S1. Rated insulation voltage is 690 V (AC 50/60 Hz) and rated impulse withstand voltage is 6 kV. AC-21A rated operational current is 40 A over 20–690 V; three-phase AC-3 rated power (380–440 V) is 15 kW; AC-23A rated power (380–440 V) is 22 kW. Maximum fuse rating gG 63 A; rated short-time withstand current 800 A (1 s); power loss per pole 1.3 W. The terminals accept stranded conductors up to 2 x 10 mm²; tightening torque is 2.2 Nm (19.5 lb-in); operating temperature is -25…+60 °C. It is used to select between several circuit steps; there is no OFF (0) position.
| Size Type | S1 |
|---|---|
| Number of Poles | 3P |
| Cam Switch Position Count | 6 Positions |
| Series | C32 |
| Function Code | A273 |
| 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 | 9 |
| Front Plate Code | F079 |
| Front Plate Size (A x B) | 64 x 64 mm |
| Rated Current | 50 A |
| Conventional Free Air Thermal Current (Ith) | 50 A |
| Ambient temperature for rated current | 55 °C (24 hours, tepe 60 °C) |
| Conventional Enclosed Thermal Current (Ithe) | 50 A |
| Rated Insulation Voltage (Ui) | 690 V (AC 50/60 Hz) |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV |
| Overvoltage category | III |
| Pollution Degree | 3 |
| Rated Operational Current AC-15 (Ie) | 220–240 V: 16 A; 380–440 V: 7 A |
| Rated Operational Current AC-20A (Ie) | 690 V: 50 A |
| Rated Operational Current AC-21A (Ie) | 20–690 V: 40 A |
| Rated Operational Current AC-22A (Ie) | 220–500 V: 40 A; 660–690 V: 40 A |
| Rated Operational Power AC-2 (Pe) | 3-phase: 220–240 V 10 kW; 380–440 V 18.5 kW; 500 V 22 kW; 660–690 V 22 kW |
| Rated Operational Power AC-3 (Pe) | 3-phase: 220–240 V 7.5 kW; 380–440 V 15 kW; 500 V 15 kW; 660–690 V 15 kW. 1-phase: 110–120 V 2.5 kW; 220–240 V 5.5 kW; 380–440 V 7.5 kW |
| Rated Operational Power AC-4 (Pe) | 3-phase: 220–240 V 3.7 kW; 380–440 V 6 kW; 500 V 6 kW; 660–690 V 6 kW. 1-phase: 110–120 V 1.1 kW; 220–240 V 2.2 kW; 380–440 V 3.7 kW |
| Rated Operational Power AC-23A (Pe) | 3-phase: 220–240 V 11 kW; 380–440 V 22 kW; 500 V 30 kW; 660–690 V 22 kW. 1-phase: 110–120 V 2.5 kW; 220–240 V 5.5 kW; 380–440 V 11 kW |
| Maximum Fuse Current | gG 63 A |
| Rated Short-Time Withstand Current (Icw) | 800 A (1 s) |
| Breaking Capacity | 220–240 V: 380 A; 380–440 V: 360 A; 660–690 V: 270 A |
| Power Loss per Pole | 1.3 W |
| Solid Conductor Cable Cross-Section | 1–10 mm2 |
| Stranded Conductor Cable Cross-Section | 2x10 mm2 |
| Flexible Conductor Cross-Section | 1.5–6 mm2 |
| Conductor Cross-Section with Ferrule | 1–6 mm2 |
| Cable section (AWG/MCM) | AWG 8 |
| Conductor Material | Copper only (individual strands may be tinned or silver-plated; conductor ends must not be soldered) |
| Tightening Torque | 2.2 Nm (19.5 lb-in) |
| Recommended Screw Driver | Pozidriv/Phillips PH2; slotted 1.2 x 8 mm (DIN 5264) |
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