MPR10, MPR20
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Mechanical power relays (MPR10, MPR20) Description The mechanical power relays (MPR10 and MPR20) are a product group of electro-mechanical high current relays. These relays were designed for the use in utility vehicles and can switch or carry up to 300 A continuous load at 12 and/or 24 V DC. A high number of switching cycles at rated load, including capacitive and inductive loads, make these power relays especially suitable for the severe requirements in the utility vehicles. MPR20 The main terminals are stud terminals. Various mounting methods allow horizontal or vertical mounting of the relay, including side flange, foot mount and M4 connectors. This allows direct replacement of conventional cylindrical relays, but also other flexible fittings. incl. plug-in connector E-T-A’s power relays can replace all conventional power relays in the market. Single pole make contact Monostable (MPR20) or bistable (MPR10) electro-mechanical relay versions Side flange for standard mounting Other mounting options with foot mount or side flange with standard hole sizes or customer-specific mounting versions Standard: screw terminals for the activation 3-pole automotive plug-in terminals, compatible with the Tyco HDSCS series (Group A, coding black) Extension to 48 V in the load circuit Utility vehicles Water-proof and water vapour proof Side mount and foot mount Low weight Long life span High continuous current Low current consumption and power loss, also as monostable version Wide temperature range Integral free-wheeling diode Barrier between main terminals The MPR20 has a power-saving circuitry at the control terminal. It reduces the holding power by a factor 10 compared to coil terminals of standard power relays. Construction machinery (cranes, excavators, dump trucks etc.) Special vehicles (emergency, service, municipal) l Agricultural vehicles (tractors, harvesters etc.) l Approvals Unit Approval authority Approval number Battery master switch or battery changeover relay Switching electrical loads with a high energy consumption (examples: air conditioning, compressors, heating systems etc.) l Replacing massive cylindrical standard power relays in utility vehicles and relays for applications with extreme requirements, e.g. in construction machinery. l Contactors in forklift trucks l Rated voltage, control circuit

Mechanical power relays (MPR10, MPR20) Technical data (25 °C) Technical data (25 °C) Main terminals Permanent magnets Screws, washers, nuts Tightening torque values: Load circuit Voltage ratings Continuous current 2 × IN 8 × IN (initially) (after endurance) brass tin-plated Neodym stainless steel M10 studs M8 studs M4 screws M5 side flange Control circuit Edge steepness of control voltage Coil power switching pulse length monostable switching pulse length 12 V 24 V holding current 12 V 24 V Ordering information General Typical life Dielectric strength Insulation resistance > 250,000 cycles...

Mechanical power relays (MPR10, MPR20) Terminal drawing Dimensions MPR10 Mounting method 1 including side flange (50 mm hole spacing) and M4 screw terminals Mounting method 5: without integral side flange for optional side or foot plate with M4 connectors 49.6 19.5 hexnut ISO 4032-M8/M10-A4 tightening torque: M8: 12.0 Nm / M10: 15.0 Nm washer ISO 7092-8/10-200HV-A4 hexnut ISO 4032-M8/M10-A4 tightening torque: M8: 12.0 Nm / M10: 15.0 Nm washer ISO 7092-8/10-200HV-A4 8 x M4 screw-in depth 8 mm tightening torque: max. 2.5 Nm mounting tightening torque 6.0 Nm side-flange DIN EN ISO 14583...

Mechanical power relays (MPR10, MPR20) Dimensions MPR10 Dimensions MPR20 Mounting method 1 including side flange (50 mm hole spacing) and M4 screw terminals 49.6 19.5 26 10.2 side-flange mounting tightening torque 6.0 Nm adapter for connector type TE connectivity HDSCS 3-pole hexnut ISO 4032-M8/M10-A4 tightening torque: M8: 12.0 Nm/M10:15.0 Nm Mounting method 1 including option 4 – 3-pole connector compatible with Tyco HDSCS DIN EN ISO 14583-M4x6-A2-50U Torx screw T20 to DIN EN ISO 10664 tightening torque: 2.0 Nm

Mechanical power relays (MPR10, MPR20) Dimensions MPR20 Schematic diagrams Mounting method 1 incl. option 4 - 2-pole plug-in connector compatible with Tyco HDSCS 88 Adapter for plug-in connector Type: TE Connectivity HDSCS 3-polig MPR20 monostable including power-saving electronic circuitry 88 All information and data given on our products are accurate and reliable to the best of our knowledge, but E-T-A does not accept any responsibility for the use in applications which are not in accordance with the present specification. E-T-A reserves the right to change specifications at any time in...