Technical Specifications Basic Identification Brand: Alstom Full Part Number: DTR0000239158 Product Type: DIN Rail Mount Miniature Auxiliary Control Relay Application: EMU/metro traction cabinet, traction substation bay interlock, MV switchgear auxiliary signal control Coil Electrical Specifications Rated Control Supply Voltage: DC 110V (railway standard auxiliary voltage) Operating Voltage Tolerance: 77 VDC ~ 137.5 VDC Nominal Coil Power Consumption: 1.4 W Pull-in Voltage: ≤70% Un; Drop-out Voltage: ≥10% Un Surge Protection: Built-in freewheeling diode to suppress inductive reverse voltage spike Contact Configuration & Load Ratings Contact Form: 4 sets change-over contacts (4CO, 4NO + 4NC) Contact Material: AgSnO2 anti-welding alloy contacts Continuous thermal carrying current per contact: 6 A AC switching capacity (AC-15, 250 VAC): Max 1500 VA DC switching capacity (DC-13, L/R=0.04s, 110 VDC): Max 330 W Mechanical service life: ≥10,000,000 cycles under no-load Electrical service life: ≥100,000 cycles under full rated breaking load Mechanical & Installation Parameters Mounting standard: 35mm standard DIN rail snap-on installation Module overall width: 35 mm (2 modular unit width) Terminal type: Screw-clamp terminals Applicable wire cross-section: 0.75 ~ 2.5 mm² copper wire Recommended tightening torque: 0.9 ~ 1.1 N·m Status indicator: Front panel built-in LED for coil energization status Overall dimension: H 80 mm × W 35 mm × D 72 mm Net weight: 0.16 kg Environmental & Compliance Standards Operating ambient temperature: -20 ℃ ~ +60 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration resistance: IEC 61373 railway rolling stock vibration test standard Shock resistance: 10g half-sine wave impact, duration 11ms EMC immunity: IEC 61000-6-2 industrial electromagnetic compatibility standard Compliance norms: IEC 60947-5-1, CE certified, RoHS & REACH hazardous substance compliant