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Pressure switch MDR 53

Technical specifications

Medium
Air, Water, Oil
Voltage type
Alternating current (AC) – single-phase
Type
Electro-mechanical
Voltage
≤ 250 V
Contact function
1 change-over contact
Gold-plated contacts
no
Pressure adjustment
Pressure difference adjustment (standard)
Pressure range (bar)
≤ 16 Bar
Pressure coupling

G1/2" female thread (main pressure coupling G1/2", pressure connector material = die-cast aluminium)

Overload relay
not possible
Cable entry gland

with 2 x WN (sealing grommet)

(accessory M20)

Relief valve
no EV or AEV possible
Rated frequency
50 Hz / 60 Hz
Rated operating current (Ie)

10 (4) A

max. media temperature

80°C

Motor switching capacity
4,0 kW
Protection class
IP 54

Short Description

Control pressure switch for oil, water and air. Single-pole version with 1 change-over contact, with pressure difference adjustment (standard), fitted with a die-cast aluminium pressure connector and CR diaphragm. Pressure adjustment is possible without tools.

Applications

  • Compressors
  • Agriculture
  • Pumps
  • Shipbuilding & offshore

Certicates & Permits

  • KEMA

At a glance

  • Control pressure switch for AC voltage
  • for pumps / for compressors
  • for oil, water and air
  • Pressure adjustment is possible without tools
  • Pressure ranges ≤16 bar
  • 1-pole (change-over)
  • Motor switching capacity 0.55 kW

The pressure switch MDR-53 is suitable for use in oil, water and air, and is fitted with 1 change-over contact, plus die-cast aluminium pressure connector and CR diaphragm. The pressure switch is fitted as standard with the possibility for pressure difference adjustment. Pressure adjustment is possible without tools. A handwheel permits switching point and hysteresis to be adjusted, whereby the cut-out pressure is adjusted with the handwheel in the upper position (the spindle also turns). By selecting a pair of values for cut-in and cut-out pressures, an intersection point is determined in the diagram. If the point lies within the shaded area, this pair of values can be adjusted (without tools) on the pressure switch. If the point lies outside the shaded area, this pair of values cannot be adjusted on the pressure switch.

Sealing grommet WN M20 for pressure switch MDR 53 cable entry gland

Sealing grommet WN M20 for pressure switch MDR 53 cable entry gland

Sealing grommet WN M20 for pressure switch MDR 53 cable entry gland
Accessories WN for MDR 53

Accessories WN for MDR 53

Accessories WN for MDR 53
Mounting bracket MW5 for pressure switch MDR 53

Mounting bracket MW5 for pressure switch MDR 53

Mounting bracket MW5 for pressure switch MDR 53
Sealing screw VS M 20 for MDR 53 cable entry gland

Sealing screw VS M 20 for MDR 53 cable entry gland

Sealing screw VS M 20 for MDR 53 cable entry gland
Cable entry gland with tension relief M20 Z and M20l for pressure switch MDR 53

Cable entry gland with tension relief M20 Z and M20l for pressure switch MDR 53

Cable entry gland with tension relief M20 Z and M20l for pressure switch MDR 53
Cable entry gland with tension relief & kink protector M20 ZK and M20 LK for pressure switch MDR 53

Cable entry gland with tension relief & kink protector M20 ZK and M20 LK for pressure switch MDR 53

Cable entry gland with tension relief & kink protector M20 ZK and M20 LK for pressure switch MDR 53

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