Pressure Switches

Features:
  • Single Phase
  • Switching capacity 2.2 kW
  • Max. cut-out pressure 12 bar
  • 2-pole (N.C.)
  • Acc. To EN 60947
  • Flange = die-cast aluminium
Technical Data
Rated insulated voltage, Uj500V
Motor switching capacity (AC3), Ue = 240V (1 ̴)2.2kW
Electrical life (AC3), Cycles> 1 x 105
Mechanical life, Cycles> 5 x 105
Max. electrical cycles, Cycles/h120
Max. mechanical cycles, Cycles/h600
Rated operational current le, at 240 VAC 316A
Bursting strength, Pz> 35 bar
Permissible medium temperature, Air -5…80°C
Permissible medium temperature, Water +80°C
Degree of Protection acc. To EN 60529IP44
Conductor cross section 1…fine stranded cable 1x/2x2.5/2.5mm²
Conductor cross section 1…rigid cable 1x/2x2.5/2.5mm²
MDR2 Datasheet
Product DetailsOn/Off SwitchPressure Range (kPa)UnloaderCable Glands4-PortConnectionWeight (gms)RBS Part No
MDR2/600 x 150-700 EV2 ✔ x ¼ BSP F 400 3010550
MDR2/1100 ✔ 400-1200 EV2Wi ✔ x ¼ BSP F 400 3011300
MDR2/1100 x 400-1200 EV2Wi ✔ x ¼ BSP F 400 3011310
MDR2/1100 ✔ 400-1200 AEV2WS ✔ x ¼ BSP F 390 3011315
MDR2/1100 ✔ 400-1200 AEV2WS ✔ ✔ ¼ BSP F 380 3013265
MDR2/1100 ✔ 400-1200 EV2i ✔ ✔ ¼ BSP F 380 3013268
Features
  • 3-Phase
  • Switching capacity 7.5 (11) kW / 20 HP
  • Available with overload relay / scale / auxiliary switch
  • Max. cut-out pressure 35 bar
  • 3-pole (N.C.)
  • Acc. To EN 60947
  • UL / CSA-approval optional
  • Flange = die-cast aluminium
Technical Data
Rated insulated voltage, Uj690V
Electrical life (AC3), Cycles> 1 x 105
Mechanical life, Cycles> 5 x 106
Max. electrical cycles, Cycles/h120
Max. mechanical cycles, Cycles/h600
Rated operational current le the, bei 690 VAC 324A
Bursting strength, Pz< 16 bar > 40 bar / < 25 bar > 60 bar
Permissible medium temperature, Air -5…80°C
Permissible medium temperature, Water +80°C
Degree of Protection acc. To EN 60529IP54
Conductor cross section 1…fine stranded cable 1x/2x4/2.5mm²
Conductor cross section 1…rigid cable 1x/2x6/4mm²
Datasheet
Motor Switching CapacityUe = 120V (1∼)Ue = 240V (1∼)Ue = 240V (3∼)Ue = 400V (3∼)Ue = 480V (3∼)Ue = 500V (3∼)Ue = 600V (3∼)Ue = 690V (3∼)
UL 508, CSA 22.22 HP3 HP7.5 HP15 HP20 HP
AC32.2 kW5.5 kW7.5/11* kW7.5/11* kW7.5/15* kW
Product DetailsOn/Off SwitchPressure Range (kPa)UnloaderShunt ReleaseThermal Overload (Amps)Cable Glands (2PG13.5Z)4-PortConnectionWeight (gms)RBS Part No
MDR3/600 x 130-600 x x x ✔* x ¼ BSP F 680 3031010
MDR3/1100 ✔ 400-1100 x x x ✔ x ¼ BSP F 680 3031021
MDR3/1100 ✔ 400-1100 x x x ✔ ✔ ¼ BSP F 710 3031022
MDR3/1100 ✔ 400-1100 EV3WS x 2.5-4.0 ✔ ✔ ¼ BSP F 750 3031129
MDR3/1100 ✔ 400-1100 EV3Wi x 4.0-6.3 ✔ x ¼ BSP F 740 3031105
MDR3/1100 ✔ 400-1100 EV3i x 4.0-6.3 ✔ x ¼ BSP F 740 3031120
MDR3/1100 ✔ 400-1100 EV3WS x 4.0-6.3 ✔ ✔ ¼ BSP F 750 3031130
MDR3/1100 ✔ 400-1100 EV3i x 6.3-10.0 ✔ x ¼ BSP F 740 3031121
MDR3/1100 ✔ 400-1100 EV3WS x 6.3-10.0 ✔ x ¼ BSP F 740 3031152
MDR3/1100 ✔ 400-1100 EV3WS x 6.3-10.0 ✔ ✔ ¼ BSP F 750 3031131
MDR3/1000RM ✔ 400-1000 EV3Wi x 6.3-10.0 ✔ x ¼ BSP F 740 3031106
MDR3/1100 ✔ 400-1100 EV3i x 10-16 ✔ x ¼ BSP F 740 3031122
MDR3/1100 ✔ 400-1100 EV3WS x 10-16 ✔ ✔ ¼ BSP F 770 3031132
MDR3/1000RM ✔ 400-1000 EV3Wi x 10-16 ✔ x ¼ BSP F 740 3031107
MDR3/1000RM ✔ 400-1000 EV3Wi x 10-16 ✔ x ¼ BSP F 740 3031107C
MDR3/1100 ✔ 400-1100 EV3i x 16-20 ✔ x ¼ BSP F 740 3031123
MDR3/1100 ✔ 400-1100 EV3WS x 16-20 ✔ ✔ ¼ BSP F 750 3031133
MDR3/1000RM ✔ 400-1000 EV3Wi x 16-20 ✔ x ¼ BSP F 740 3031108
MDR3/1100 ✔ 400-1100 EV3i x 20-24 ✔ x ¼ BSP F 740 3031124
MDR3/1000RM ✔ 400-1000 EV3Wi x 20-24 ✔ x ¼ BSP F 740 3031109
MDR3/1100 ✔ 400-1100 EV3i x 22-30 ✔ x ¼ BSP F 740 3031125
MDR3/1100 ✔ 400-1100 EV3Wi ✔ 6.3-10.0 ✔ ✔ ¼ BSP F 870 3031116
MDR3/1100 ✔ 400-1100 EV3Wi ✔ 16-10 ✔ ✔ ¼ BSP F 870 3031117
MDR3/1100 ✔ 400-1100 EV3Wi ✔ 16-20 ✔ ✔ ¼ BSP F 870 3031118
MDR3/1600 ✔ 600-1600 x x x ✔ x ¼ BSP F 680 3031031
MDR3/1600 ✔ 600-1600 x x x ✔ ✔ ¼ BSP F 710 3031032
MDR3/1600 ✔ 600-1600 EV3i x x ✔ ✔ ¼ BSP F 710 3031033
MDR3/1600 ✔ 600-1600 EV3WS x 6.3-10.0 ✔ x ¼ BSP F 740 3031036
MDR3/1600 ✔ 600-1600 EV3WS x 10-16 ✔ x ¼ BSP F 740 3031037
MDR3/2500 ✔ 750-2500 x x x ✔ x ¼ BSP F 710 3031041
MDR3/3500 ✔ 1200-3500 x x x ✔ x ½? BSP F 700 3031043

* 2PG11Z

Features
  • 3-Phase
  • Switching capacity 4.0 / 5.5 kW (4S) or 2.5 / 4.0 kW (4SU)
  • Max. cut-out pressure 16 bar
  • 3-pole [N.C.] (4S) or 3-pole [N.O.] (4SU)
  • Acc. To EN 60947
  • Flange = die-cast aluminium
  • 4-way-flange optional (4S)
  • With reversed function (4SU)
    •
    Technical Data4S4SU
    Rated insulated voltage, Uj500V500V
    Electrical life (AC3), Cycles> 1 x 105> 1 x 105
    Mechanical life, Cycles> 5 x 105> 5 x 105
    Max. electrical cycles, Cycles/h120120
    Max. mechanical cycles, Cycles/h600600
    Rated operational current le at 400 V/500 VAC 316A / 9A12A
    Bursting strength, Pz> 35 bar> 35 bar
    Permissible medium temperature, Air -5…80°C -5…80°C
    Permissible medium temperature, Water +80°C +80°C
    Degree of Protection acc. To EN 60529IP44IP44
    Conductor cross section 1…fine stranded cable 1x/2x2.5/2.5mm²2.5/2.5mm²
    Conductor cross section 1…rigid cable 1x/2x2.5/2.5mm²2.5/2.5mm²
    Datasheet
    Motor Switching Capacity (AC3)Ue = 240V (1∼)Ue = 230V (3∼)Ue = 400V (3∼)Ue = 500V (3∼)
    4S2.5 kW4.0 kW5.5 kW5.5 kW
    4SU1.5 kW2.5 kW4.0 kW-
    Product DetailsOn/Off SwitchPressure Range (kPa)UnloaderCable Glands (1PG11Z)ConnectionWeight (gms)RBS Part No
    MDR4S/600 x 150-600 x ✔ ¼ BSP F 490 3100000
    MDR4S/1100 x 400-1100 x ✔ ¼ BSP F 490 3110000
    MDR4S/1100 x 400-1100 x ✔ ¼ gauge + ½" BSP F 490 3115000
    MDR4S/1100 x 400-1100 EV4i ✔ ¼ BSP F 530 3120000
    MDR4S /1100 ✔ 400-1100 x ✔ ¼ BSP F 530 3121000
    MDR4S /1100 ✔ 400-1100 EV4i ✔ ¼ BSP F 530 3130000
    MDR4S/1100 ✔ 400-1100 EV4-M5 ✔* ¼ BSP F 540 3130050
    MDR4S /1600 x 600-1600 x ✔ ¼ BSP F 490 3140000
    MDR4S /1600 ✔ 600-1600 AEV4 ✔** ¼ BSP F 490 3140012
    MDR4SU/600 x 150-600 x x ¼ BSP F 480 3149000
    MDR4SU/1100 x 400-1100 x x ¼ BSP F 480 3149200
    MDR4SU/1600 G1/4 x 600-1600 x x ¼ BSP F 480 3149400

    * 2PG13.5Z

    ** 2PG11Z

    Features
    • 3-Phase
    • Switching capacity 5.5 kW
    • Available with overload relay
    • Max. cut-out pressure 45 bar
    • 3-pole [N.C.]
    • Acc. To EN 60947
    • Flange = die-cast aluminium
    Technical Data
    Rated insulated voltage, Uj500V
    Electrical life (AC3), Cycles> 1 x 105
    Mechanical life, Cycles> 5 x 105
    Max. electrical cycles, Cycles/h120
    Max. mechanical cycles, Cycles/h600
    Rated operational current le at 400 VAC 3/500 VAC 316A / 12A
    Bursting strength, Pz up to 16 bar / 45 bar> 40 bar / > 60 bar
    Permissible medium temperature, Air -5…80°C
    Permissible medium temperature, Water +80°C
    Degree of Protection acc. To EN 60529IP54
    Conductor cross section 1…fine stranded cable 1x/2x2.5/2.5mm²
    Conductor cross section 1…rigid cable 1x/2x4/4mm²
    Datasheet
    Motor Switching Capacity (AC3)Ue = 240V (1∼)Ue = 230V (3∼)Ue = 400V (3∼)Ue = 500V (3∼)
    MDR52.5 kW4.0 kW5.5 kW4.0 kW
    Product DetailsSwitchPressure Range Thermal OverloadCable GlandsConnectionWeightRBS PN
    MDR5/500 x 150-500 x ✔ ½" BSP F 870 3200000
    MDR5/800 x 200-800 x ✔ ½" BSP F 870 3210000
    MDR5/1100 x 200-1100 x ✔ ½" BSP F 870 3230000
    MDR5/1100 ✔* 200-1100 x ✔ ½" BSP F 880 3310000
    MDR5/1100 ✔ 200-1100 2.4-4.2 ✔ ½" BSP F 1040 3410000
    MDR5/1100 ✔ 200-1100 4.0-7.0 ✔ ½" BSP F 1040 3420000
    MDR5/1100 ✔ 200-1100 6.1-10.3 ✔ ½" BSP F 1040 3440000
    MDR5/1100 ✔ 200-1100 9-14 ✔ ½" BSP F 1050 3470000
    MDR5/1100 ✔ 200-1100 11-18 ✔ ½" BSP F 1000 3480000
    MDR5/1600 x 250-1600 x ✔ ½" BSP F 870 3240000
    MDR5/1600 ✔* 250-1600 x ✔ ½" BSP F 870 3320000

    Accessories

    Unloader Valves

    CodeSuitable forDescriptionWeightRBS PN
    EV2 MDR2 With screw fitting for 6 mm plastic or copper discharge line 253909001
    EV2i MDR2 With screw fitting for ¼ plastic or copper discharge line 373909000
    EV2Wi MDR2 Right-angle valve with screw fitting for ¼ plastic or copper discharge line 153909009
    EV2WS MDR2 Right-angle valve with quick-connect for 6 mm plastic discharge line 153909011
    EV3 MDR3 With screw fitting for 6 mm plastic or copper discharge line 25On Request
    EV3i MDR3 With screw fitting for ¼ plastic or copper discharge line 253909020
    EV3Wi + ST3 MDR3 Right-angle valve with screw fitting for ¼ plastic or copper discharge line 183909031
    EV3WS MDR3 Right-angle valve with quick-connect for 6 mm plastic discharge line 103909030
    EV4i MDR4 With screw fitting for ¼ plastic or copper discharge line 253910000
    EV4-M5 MDR4 With screw fitting for 6 mm plastic or copper discharge line, mounting of silencer possible, port with M5 thread 25On Request
    EV5E MDR5 With screw fitting for 6 mm plastic or copper discharge line 1003911050
    EV5Ei MDR5 With screw fitting for ¼ plastic or copper discharge line 1003911051
    EV5i MDR5 Right-angle valve with screw fitting for ¼ plastic or copper discharge line c/w exhaust stub 1003911000

    Cable Glands

    CodeSuitable forDescriptionWeightRBS PN
    PG11Z MDR2 / MDR4 With strain Relief 123919200
    PG13.5Z MDR3 With strain Relief 123919205
    PG16V MDR3 / MDR5 Complete 123919210

    Unloader diff

    CodeSuitable forDescriptionWeightRBS PN
    AEV2i MDR2 With screw fitting for ¼ plastic or copper discharge line 253908500
    AEV2W MDR2 Right-angle valve with screw fitting for 6 mm plastic or copper discharge line 153909012
    AEV2WS MDR2 Right-angle valve with quick-connect for 6 mm plastic discharge line 153909010
    AEV3 MDR3 With screw fitting for 6 mm plastic or copper discharge line 25On Request
    AEV3WS MDR3 Right-angle valve with quick-connect for 6 mm plastic discharge line 183909032
    AEV4 MDR4 With screw fitting for 6 mm plastic or copper discharge line 253910100
    AEV4W MDR4 Right-angle valve with screw fitting for 6 mm plastic or copper discharge line 15On Request
    AEV5i MDR5 Right-angle valve with screw fitting for ¼ plastic or copper discharge line 1003911100

    Cover

    CodeSuitable forDescriptionWeightRBS PN
    H2 MDR2 Cover without rotary knob 403913500
    H2-EA MDR2 Cover with rotary knob for manual On/Off switching 403913600
    H3 MDR3 Cover without rotary knob 1003032920
    H3-EA MDR3 Cover with rotary knob for manual On/Off switching 1003032922
    H4 S MDR4 Cover without rotary knob for MDR4 S 70On Request
    H4S-EA MDR4 Cover with rotary knob for manual On/Off switching for MDR 4S 703915000
    H5 MDR5 Cover without push-buttons 1303917000
    H5-K MDR5 Cover with push-buttons for manual On/Off switching only functions with R5 thermal overload fitted 1303918000

    thermal3

    CodeSuitable forDescriptionWeightRBS PN
    SK3 MDR3 Contact block without lock mechanism (supplied as standard with MDR3) 903032930
    SK3-S MDR3 Contact block with lock mechanism (supplied as standard with MDR3 +EA) 1103032932
    SK R3/1.0 MDR3 0.63 - 1.00 Amps 145On Request
    SK R3/1.6 MDR3 1.00 - 1.60 Amps 1453032802
    SK R3/2.5 MDR3 1.60 - 2.50 Amps 1453032803
    SK R3/4.0 MDR3 2.50 - 4.00 Amps 1453032804
    SK R3/6.3 MDR3 4.00 - 6.30 Amps 1453032805
    SK R3/10 MDR3 6.30 - 10.00 Amps 1453032806
    SK R3/16 MDR3 10.00 - 16.00 Amps 1453032807
    SK R3/20 MDR3 16.00 - 20.00 Amps 1453032808
    SK R3/24 MDR3 20.00 - 24.00 Amps 1453032809
    SK R3/30/2 MDR3 22.00 - 30.00 Amps, 240 Volts, 2 pole 1453032810
    SK R3H/16 MDR3 10.00 - 16.00 Amps, (H type for higher switching capacity) 1453032807C
    SK R3H/20 MDR3 16.00 - 20.00 Amps, (H type for higher switching capacity) 1453032808C
    SK R3H/24 MDR3 20.00 - 24.00 Amps, (H type for higher switching capacity) 145On Request
    SK5 MDR5 Contact block 953919150
    R5/2.45 MDR5 1.50 - 2.45 Amps 1503620000
    R5/4.2 MDR5 2.40 - 4.20 Amps 1503630000
    R5/7.0 MDR5 4.00 - 7.00 Amps 1503640000
    R5/10.3 MDR5 6.10 - 10.30 Amps 1503650000
    R5/14 MDR5 9.00 - 14.00 Amps 1503660000
    R5/18 MDR5 11.00 - 18.00 Amps 1803661000

    under-voltage

    CodeSuitable forDescriptionWeightRBS PN
    RU3/230-50 MDR3 Under voltage release 230 V, 50 Hz 1003032924
    RU3/400-50 MDR3 Under voltage release 400 V, 50 Hz 1003032925
    RA3/480-60 MDR3 Shunt release 480V, 60 Hz 100On Request
    RA3/240-60 MDR3 Shunt release 240V, 60 Hz 100On Request
    RA3/230-50 MDR3 Shunt release 230V, 50 Hz 1003032820
    RA3/110-50 MDR3 Shunt release 110V, 50 Hz 100On Request
    RA3/24-50 MDR3 Shunt release 24V, 50 Hz 100On Request

    hourmeter

    CodeSuitable forDescriptionWeightRBS PN
    H3-EA-B230 MDR3 Hourmeter 2303032950
    H3-EA-B400 MDR3 Hourmeter 2303032951

    Miscellaneous

    CodeSuitable forDescriptionWeightRBS PN
    DPA Board MDR3 Phase sequence control, phase failure control, under voltage release, other external contact (eg, temperature switch) 603032960
    MDR3 ¼ Nut & olive 253909099
    MDR3 6mm nut & olive 253909098
    MDR5 MDR5/1100 Diaphragm 3913000
    MDR5 Leg Spring Suit MDR5/500 - 1600 3919155
    MDR5 Brass Reducer 1/2" x 1/4" 454924705

    Contact Info

    • 21 Brookhollow Ave.,Norwest, NSW 2153.
    • PO Box 6345 BHBC,Baulkham Hills, NSW 2153.
    • sales@rossbrownsales.com.au
    • (02) 8855 1700
    • (02) 9899 4233

    About Us

    Ross Brown Sales Pty Limited is a privately owned Australian company established in 1957.

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