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. 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 MPR10 MPR20 MPR20 of conventional cylindrical relays, but also other flexible fittings. incl. plug-in connector E-T-As power relays can replace all conventional power relays in the market. Versions Features l Single pole make contact l Water-proof and water vapour proof l Monostable (MPR20) or bistable (MPR10) electro-mechanical l Side mount and foot mount relay versions l Low weight l Side flange for standard mounting l Long life span l Other mounting options with foot mount or side flange with l High continuous current standard hole sizes or customer-specific mounting versions l Low current consumption and power loss, also as l Standard: screw terminals for the activation monostable version l 3-pole automotive plug-in terminals, compatible with the l Wide temperature range Tyco HDSCS series l Integral free-wheeling diode l Barrier between main terminals l The MPR20 has a power-saving circuitry at the control terminal. It reduces the holding power by a factor 10 compared to coil Target industries terminals of standard power relays. l Utility vehicles l Buses Applications l Trucks l Construction machinery (cranes, excavators, dump trucks etc.) l Special vehicles (emergency, service, municipal) l Battery master switch or battery changeover relay l Agricultural vehicles (tractors, harvesters etc.) l 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, Approvals e.g. in construction machinery. l Contactors in forklift trucks 5 Unit Approval Logo Directive Rated authority voltage MPR10 KBA E1 10R-047621 ECE-R 10 24 V E1*10R05/01 12 V or MPR20 KBA ECE-R 10 *902700 24 V Compliance 2048 www.e-t-a.de 1Mechanical power relays (MPR10, MPR20) Technical data (25 C) Technical data (25 C) Permanent Neodym Load circuit magnets Voltage ratings U 12 V DC, 24 V DC N Screws, washers, stainless steel Continuous current I 100 A, 200 A, 300 A N nuts Tightening torque M10 studs 15.0 Nm Overload 20 s 2 I N values: M8 studs 12.0 Nm 1 s 8 I N M4 screws 2.0 Nm Contact voltage max. 150 mV (initially) M5 side flange 6.0 Nm 1) drop max. 175 mV (after endurance) Control circuit Ordering information rated voltage operating voltage Type no. 12 V DC: 9...16 V DC 24 V DC: 16...32 V DC MPR10-N bistable MPR20-N monostable Edge steepness of 0.25 V/ms Number of poles control voltage 1 single pole Coil power bistable switching < 60 W Voltage ratings pulse length 50 ms ...1s 1 12 V monostable switching 2 24 V pulse length (min. 50 ms) Current ratings 12 V < 2.5 A 1 100 A 24 V < 3 A 2 200 A holding 3 300 A current < 0.12 A Design of load terminals 12 V < 0.07 A 1 M8 studs (100 A, 200 A) 24 V 2 M10 studs (100 A, 200 A, 300 A) General Accessories of load terminals Typical life mechanical 0 without monostable > 250,000 cycles 2 washers and nuts bulk shipped bistable > 100,000 cycles Coil connection (control contacts) resistive (12 V) > 200,000 cycles at I N 0 for 3-pole connector resistive (24 V) > 100,000 cycles at I 1 M4 screws N Dielectric 1 kV to ISO 16750-2 chapter 04.11 Mounting method strength 0 without 1 side flange with 5.4 mm hole Insulation > 100 M (initially) to ISO 16750-2, 3 plate for side flange resistance chapter 4.12 4 plate for foot mount Temperature range -40 ... +85 C 5 without integral side flange, for optional side or foot plate with Degree of Enclosure IP 6K9K, IP X6k, IP X7 M4 connectors to ISO 20653 protection Options 1 Terminal area IP00 to ISO 20653 2 with suppressor diode Vibration > 6 g Options 2 2 57.9 m/s to ISO 16750-3, 4.1.2.7 0 without Shock > 50g / 30g 5 Options 3 2 500 m/s ON position 0 without 2 300 m/s OFF position Options 4 to ISO 16750-3, chapter 4.2.2 Plug-in type terminals, Flammability UL V0 and meets the requirements to compatible with Tyco ECE-R 118 02, appendix 6.7, especially HDSCS (control for vehicles used for carriage of passengers contacts) Chemical resistance to ISO 16750-5 without 1 3-pole (MPR10) Oil, hydraulic liquids, alcohol, urea, extinguishing agents, 2 2-pole (MPR20) battery acid, detergents, grease, cold cleaner Corrosion 5 % salt mist to ISO 16750-4, MPR20-N- 1 2 2 - 1 1 1 1 - 2 0 0 ordering example chapter 5.5.1, severity 4 MPR10-N- 1 1 3 - 2 2 0 1 - 2 0 0 1 ordering example Humidity 85 % RH to ISO 16750-4, chapter 5.7 w x h x d (without terminals or flanges) Notes Dimensions 49.6 (62) 91.3 45.8 mm Mass 290 g - Terminal cross section: > 35 mm for 100 A at M8 Material > 70 mm for 200 A at M8/M10 Enclosure Polyamide (PA), glass fiber reinforced > 95 mm for 300 A at M10 Optional mounting aluminium plates The connecting cables must be firmly fixed by suitable means at the Main terminals brass tin-plated latest after 7 cm from the axis of the screw terminal. See drawing 2 www.e-t-a.de 2048