S203M-K20UC
Product ID:75380
Updated: 2026/4/3
Key Features
- 1Ensure high short-circuit breaking capacity across the entire model line. 2、Utilize flexible AC and DC application for versatile use. 3、Meet compliance with all major international and local standards. 4、Integrate easily with System pro M compact accessories. 5、Install compact modular design in distribution boards easily.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Standards | CSA 22.2 No. 235 IEC/EN 60947-2 UL 1077 | Tripping Characteristic | K |
| Rated Operational Voltage | acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 440 V acc. to IEC 60947-2 440 V AC acc. to IEC 60947-2 440 V DC | Rated Insulation Voltage (Ui) | acc. to IEC/EN 60664-1 440 V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV at 2000 m 5 kV at Sea Level 6.2 kV | Input Voltage Type | AC/DC |
| Rated Current (In) | 20 A | Rated Short-Circuit Capacity | (AC) 10 kA (230 V AC) 10 kA (400 V AC) 10 kA (230 V) 10 kA (400 V) 10 kA |
| Rated Ultimate Short-Circuit Breaking Capacity (Icu) | (220 V DC) 25 kA (230 V AC) 25 kA (400 V AC) 10 kA (440 V AC) 10 kA (440 V DC) 10 kA (230 V) 10 kA | Rated Conditional Short-Circuit Current (Inc) | (230 V) 25 kA (400 V) 10 kA |
| Rated Service Short-Circuit Breaking Capacity (Ics) | (220 V DC) 20 kA | Rated Frequency (f) | 50 / 60 Hz DC |
| Power Loss | 9.21 W at Rated Operating Conditions per Pole 3.07 W | Power Supply Connection | Please Note Polarity of Device |
| Contact Position Indication | Red ON / Green OFF | Energy Limiting Class | 3 |
| Mechanical Endurance | 20000 cycle | Number of Protected Poles | 3 |
| Number of Poles | 3 | Overvoltage Category | III |
| Tightening Torque | 2.8 N·m | Screw Terminal Type | Failsafe Bi-directional Cylinder-lift Terminal |
| Actuator Marking | I / O | Actuator Material | Insulation Group II, Black, Sealable |
| Housing Material | Insulation Group I, RAL 7035 | Options Provided | Universal current |
| Mounting on DIN Rail | TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715 | Mounting Position | any |
| Recommended Screw Driver | Pozidriv 2 | Accessories Available | Yes |
| Remarks | Please note polarity of device | Connecting Capacity | Busbar 10 / 10 mm² Flexible with Ferrule 0.75 ... 25 mm² Flexible 0.75 ... 25 mm² Flexible 0.75 ... 25 mm² Rigid 0.75 ... 35 mm² Stranded 0.75 ... 35 mm² |
| Installation Size | acc. to DIN 43880 1 | Terminal Type | Screw Terminals |
| Ambient Air Temperature | Operation -25 ... +55 °C Storage -40 ... +70 °C | Degree of Protection | IP20 Enclosure with Cover IP40 |
| Pollution Degree | 3 | Environmental Conditions | 28 cycles with 55 °C / 90-96 % and 25 °C / 95-100 % |
| Resistance to Vibrations | 20 Cycles with Load 0.8 In: 5g 5 ... 150 ... 5 Hz | Resistance to Shock acc. to IEC 60068-2-27 | 25g 2 shocks 13 ms |
| Environmental Information | 2CDK400030D201 | Maximum Operating Voltage UL/CSA | 500 V DC 480Y / 277 V AC |
| Interrupting Rating acc. to UL1077 | (220 V AC) 10 kA (277 V AC) 6 kA (440 V DC) 10 kA (480Y / 277 V AC) 10 kA (500 V DC) 10 kA | Connecting Capacity UL/CSA | Busbar 14-8 AWG Conductor 14-4 AWG |
| Tightening Torque UL/CSA | 25 in·lb | Width in Number of Modular Spacings | 3.0 |
| Product Net Width | 52.5 mm | Product Net Height | 85 mm |
| Product Net Depth / Length | 69 mm | Product Net Weight | 0.375 kg |
| Pole Net Weight | 0.125 kg | Built-In Depth (t2) | 69 mm |
| ETIM 8 | EC000042 - Miniature circuit breaker (MCB) | ETIM 9 | EC000042 - Miniature circuit breaker (MCB) |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) | WEEE B2C / B2B | Business To Business |
| CN8 | 8536 20 10 | UNSPSC | 39121603 |
| eClass | V11.0 : 27141901 | IDEA Granular Category Code (IGCC) | 4899 >> Miniature circuit breaker (MCB) screw-in model |
| Object Classification Code | F | Manufacturer ID | 2CDS273061R0487 |
Specifications may be subject to change without notice