S203MT-K40UC
Product ID:80415
Updated: 2026/4/3
Key Features
- 1Limit fault current to protect equipment and ensure operational safety. 2、Combine thermal and magnetic tripping for overload and short circuit protection. 3、Achieve IP20 protection against accidental contact and electric shock. 4、Withstand shocks and vibrations in harsh railway environments. 5、Comply with NF F 16-101/102 standards for traction applications.
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 60898-1 440 V AC acc. to IEC 60898-1 440 V DC acc. to IEC 60898-1 440 V acc. to IEC 60947-2 440 V AC acc. to IEC 60947-2 440 V DC | Operational Voltage | Maximum (Incl. Tolerance) 462 V AC Maximum (Incl. Tolerance) 500 V DC Minimum 12 V AC Minimum 12 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 |
| Dielectric Test Voltage | 50/60 Hz-1 min: 2 kV | Input Voltage Type | AC/DC |
| Rated Current (In) | 40 A | Rated Short-Circuit Capacity | (AC) 7.5 kA (DC) 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) | (230 V AC) 10 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) 10 kA (400 V) 10 kA |
| Rated Service Short-Circuit Breaking Capacity (Ics) | (440 V DC) 10 kA | Rated Frequency (f) | 50 / 60 Hz DC |
| Power Loss | 11.28 W at Rated Operating Conditions per Pole 3.76 W | Power Supply Connection | Please Note Polarity of Device |
| Contact Position Indication | ON / OFF | Energy Limiting Class | 3 |
| Electrical Endurance | 1500 DC cycle 10000 AC cycle | Mechanical Endurance | 20000 cycle |
| Number of Protected Poles | 3 | Number of Poles | 3 |
| Overvoltage Category | III | Tightening Torque | 2.8 N·m |
| Actuator Type | Toggle | 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 | Suitable for traction application |
| 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 | Reference Ambient Air Temperature | 20 °C |
| Degree of Protection | IP20 IPXXB 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 | Maximum Operating Voltage UL/CSA | 500 V DC 480Y / 277 V AC |
| Interrupting Rating acc. to UL1077 | (440 V DC) 10 kA | Connecting Capacity UL/CSA | Busbar 14-8 AWG Conductor 14-4 AWG |
| Tightening Torque UL/CSA | Main Circuit 18 in·lb | Width in Number of Modular Spacings | 3.0 |
| Product Net Width | 52.5 mm | Product Net Height | 88 mm |
| Product Net Depth / Length | 69 mm | Product Net Weight | 0.375 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) | 4897 >> Miniature circuit breakers | Manufacturer ID | 2CDS273065R0557 |
Specifications may be subject to change without notice