Technical Specifications Basic Identification Brand: Alstom / Areva T&D Full Part Number: DTR0000235357 Product Type: Modular DIN Rail Auxiliary Control Relay Application: Metro & EMU traction control cabinet, traction substation bay logic, MV switchgear auxiliary signal control Coil Electrical Parameters Rated Control Voltage: DC 110V (railway standard vehicle supply) Operating Voltage Range: 77V ~ 137.5 VDC Coil Power Consumption: 1.4W nominal Pull-in Voltage ≤ 70% Un; Drop-out Voltage ≥ 10% Un Built-in freewheeling diode for inductive surge absorption Contact Ratings & Configuration Contact Form: 4 groups change-over contacts (4CO, 4NO+4NC) Contact Material: AgSnO2 anti-welding alloy Continuous thermal current per contact: 6A AC switching capacity (AC-15, 250VAC): 1500VA max DC switching capacity (DC-13, 110VDC, L/R=0.04s): 330W max Mechanical service life: ≥10,000,000 cycles Electrical service life: ≥100,000 cycles under full rated load Mechanical & Installation Mounting: Standard 35mm DIN rail snap-on installation Module width: 35mm (2 modular unit) Terminals: Screw clamp terminals, applicable wire 0.75 ~ 2.5 mm² Tightening torque: 0.9 ~ 1.1 N·m Status indicator: Built-in LED power/actuation indicator Overall dimension: H 80 mm × W 35 mm × D 72 mm Net weight: 0.16 kg Environmental & Compliance Operating temperature: -20 ℃ ~ +60 ℃ Storage temperature: -40 ℃ ~ +85 ℃ Humidity: 5% ~ 95% non-condensing Vibration resistance: IEC 61373 railway rolling stock standard Shock resistance: 10g, 11ms half-sine wave EMC compliance: IEC 61000-6-2 industrial immunity Standards: IEC 60947-5-1, CE certified, RoHS & REACH compliant