Relay module SMD4 Series Contact data - Relay module with 4-pole relay with forcibly guided contacts according to IEC 61810-3 - Application type A - Protective separation (see insulation data) - Integration in safety applications according to IEC/EN 62061, ISO/EN 13849 possible* - Mounting on 35 mm mounting rail (IEC 60715) - Switching current: 8 A MAX - Switching voltage: 250 V AC/DC - Power consumption: 0,83 ... 1,4 W - Overvoltage protection in the control unit - With spring terminals (SMD319) - With screw terminals (SMD318) - Contact assembly SMD318/319: 3 NO + 1 NC Contact material AgCuNi + 0,2, ..., 0,4 μm Au Type of contact Single contact with notched crown Rated switching power 2 000 VA 250 V / 8 A / AC-1 (max.) Electr. life time (0,1 Hz, rel. duty cycle 10%) 100 000 Inrush current 30 A for 20 ms Switching voltage range 5, ..., 250 V DC / AC Switching current range* 3 mA, ..., 8 A Switching power range* 40 mW, ..., 2 000 W (VA) Contact resistance as new (max.) 100 mΩ Short circuit resistance of NO contacts** 1 000 A with pre-fuse SCPD 10 A gG / gL (fuse) Short circuit resistance of NC contacts** 1 000 A with pre-fuse SCPD 6 A gG / gL (fuse) * User is responsible for correct integration! Circuit diagram (top view) * Reference values ** Prospective short-circuit current Insulation data Electrical life (NO contacts) Rated insulation voltage (IEC 60664-1) 250 VAC Basic insulation - Air and creepage distance (min.) 2,5 mm - Test voltage 2 500 Vrms / 1 min Double or reinforced insulation - Air and creepage distance (min.) 5,5 mm - Test voltage 4 000 Vrms / 1 min Open contact: Test voltage* 1 500 Vrms / 1 min Pollution degree 2 Overvoltage category III * Initial value Mechanical data Switching capacity (IEC 61810-1) AC-1: 240 V / 8 A MAX AC-15: 240 V / 5 A MAX DC-1: 24 V / 8 A MAX DC-13: 24 V / 5 A / 0,1 Hz MAX L/R = 40 ms Switching capacity (UL 508) B300, R300 Continuous current per contact at load of: 1 or 2 contacts 8 A MAX 3 contacts 6 A MAX Contact load limit curve (DC) Module data excitation side at 20 °C * without coil wiring Technical data Connection data Screw terminal: - Cross sections for wire: 0,2 - 2,5 mm2 / AWG 24 - 14 - Cross sections for braid: 0,2 - 2,5 mm2 / AWG 24 - 12 - Tightening torque: 0,6 Nm Connection data spring terminal: - Cross sections for wire: 0,2 - 2,0 mm2 / AWG 24 - 14 - Cross sections for braid: 0,2 - 2,5 mm2 / AWG 24 - 12 Ambient temperature Thermal resistance Protection class Approvals UL File Mechanical lifetime (min.) 10 x 106 operations Switching frequency (max.) 8 Hz Response time (NO closed) (typ.) 20 ms Drop-out time (NC closed) (typ.)* 5 ms Bounce time (typ.) NO: 2 ms / NC: 20 ms Shock resistance (16 ms) (min.) NO: 15g / NC: 5g Vibr. resistance (10-200 Hz) (min.) NO: 10g / NC: 1,5g Weight approx. 130 g Mounting position any Mounting instructions Mounting Options, Accessories Other coil designs Test conditions: - Graph 1: Contact current 5 A MAX - Graph 2: without previous operation - Duty cycle 100% ELESTA GmbH, Heuteilstrasse 18, CH - 7310 Bad Ragaz, Switzerland Type designation Number of contacts NO Number of contacts NC Connection technology Nominal coil voltage Options