53 HEAV Y DUTY RELAY FEATURES APPLICATION l A/C Blower l A/C Compressor l Engine Cooling Fan l Radiator Fan l Starter Motors l Rear Window Defogger l Battery Disconnection l High Performance l Heavy duty up to 70Amps l 6.3mm Flat terminals l Suitable Couplers available l Dual Contacts TECHNICAL DATA FOR CONTACT SIDE : Model : 53SO 53DO Areas of Application 53TO RESISTIVE /INDUCTIVE/CAPACITIVE LOADS Contact Configuration : 1A 1A (Dual) 1A (Dual) Contact Material : Silver Nickel Silver Nickel Silver Nickel / Tungsten* Contact Rating at 250C - 12VDC (Res.) : 40A 50A 70A : 20A 25A 35A Electrical Life Operations Min. : 1 x 105 1 x 105 1 x 105 Mechanical Life Operations Min. : 1 x 106 1 x 106 1 x 106 Contact Voltage Drop at 10 A (Min) : 30mV 30mV 30mV Ma ximum Switching Current @ 12.8 VDC For 3 Sec. : 120A 150A 240A 24VDC (Res.) *Dual Contact with Tungsten pre-contact / Silver nickel main contact GENERAL DATA FOR COIL SIDE Nominal Coil Power : 1.92W (Approx) Operating Power : 1.1W (Approx) Operate Time** : 15 milli Seconds Release Time** : 15 milli Seconds CIRCUIT DIAGRAM R* ** At nominal voltage without coil suppression (excluding bounce) OPERATING CONDITIONS 0 30 Ambient Temperature : -25 C to +85 C Ma ximum Temperature : 1550C Dielectric Strength : 500VRMS Insulation Resistance : 100 Meg. Ohms Min. At 500 VDC, 250C RH 50 Vibration Resistance (without Change in the switching state>10µS) : Shock Resistance (without Change in the switching state>10µS) : 85 86 87 Dual Contact 0 R* 10-50Hz 4.4g (min) 30 30g, 8mS 85 86 87 Singe Contact * Parallel resistor or Diode Optional HOW TO ORDER - 12 D 0 - XXX Specialities If any Product Series 0- No Resistor in Parallel to Coil 1 - With Resistor in Parallel to Coil 0-Without Bracket 1-With Bracket S - Single Contact D - Dual Contact T - Dual Contact Heavy Duty Nominal Coil Voltage (Refer Coil Data) Contact Arrangement 1A - 1 Form A Coil Resistance without parallel resistor in Ohms ±10% 1A Pick-up Voltage VDC Version T - ***Pick-up Voltage VDC Version D 1 Nominal Voltage VDC 53 COIL DATA 06 4.8 5.2 20 09 6.8 7.2 55 12 9.0 9.6 75 18 13.5 14.4 165 24 18.0 19.2 250 48 36.0 38.4 1100 ***Lower pick-up Voltages available on request DIMENSIONS Relay without Bracket Relay with Bracket 28.0 25.5 28.0 Ø5.0 33.0 28.0 19.0 8.0 28.0 11.5 46.0 2x0.8 4x0.8 4x6.30 25.5 87 30 11.5 4x0.8 8.4 8.4 85 86 2x0.8 4x6.30 10.35 17.9 MECHANICAL DATA COVER RETENTION Pull : 20KgF Push : 20KgF TERMINAL STRENGTH Pull : 10KgF Push : 10KgF AVAILABLE ON REQUEST l High temperature winding wire l Special coil resistance & pick-up l For other custom solutions consult factory DATA ON VARIOUS TESTS CONDUCTED FOR OPERATING CONDITIONS * TEST TEST CONDITION RESULT 0 Relay kept at 100 C Coil Voltage : 14 VDC Load given : 25 A @ 12 VDC Continuous Energisation test at Ex treme temperature Conditions Duration : 5 Sec. On, 5 Sec. OFF Relays successfully completed 100000 operations at given load No. of operation : 50000 0 The above test repeated at - 30 C for 50000 operations Relay subjected to :0 0 -30 C to + 100 C in 2 Hrs. with coil ON 0 Thermal cycling +100 C for 2 Hrs. with coil ON 0 0 +100 C to - 30 C in 2 Hrs. with 1 Hrs. Coil ON & 1 Hrs. Coil OFF All operating parameters within the specifications af ter test 0 -30 C for two Hrs. with Coil ON No. of Cycles : 3 Relay is subjected to :Ma x. Voltage : 100VDC Shock Voltage Shock Wave : Exponential Damping vibration Time : 500 micro Sec. Af ter the test, all operating parameters of the relay are within specification. Period : 30 Sec. Test Time : 10 Hrs. Dropping Impact Jump Start Relays dropped from a height of 1 Meter to a concrete floor 24 VDC for 1 minute conducting nominal current 0 at 23 C Corrosion Resistance 5% Sodium Chloride solution applied to relay for 48 Hrs. Water Resistance test Horizontal Plane:23rev. / Min. Water Pressure:0.03 Mpa Test time:10 Min *Typical values for relays with 12 VDC coil. For higher severity please consult factory All Parameters except the load given are same for 53 & 53PT Relays. No change in operating parameters of the relay. Withstood successfully No damage to relay parts No water ingression inside the relay