Product Overview

Features
Specications
Enclosure
IP20 to EN 60529 / IEC 60529
Contact loads
MP with time relay (contacts M-S)
AC15 = 2 A, 250 V
DC13 = 0.2 A, 250 V
MP without time relay
AC15 = 0.1 A, 250 V
DC13 = 12 W, 125 V
Wire dimensions
solid / stranded
0.2 – 1.5 mm
2
exible, without ferrules
0.2 – 1.5 mm
2
exible, with ferrules
0.2 – 1 mm
2
Tightening torque
max. 1.2 Nm
Rated impulse voltage
4 kV
Pollution degree
3
Short circuit protection, fuse
2 A
Insulation
250 V
Terminology
Dierential range
The pressure dierence between LP and OIL connections within which the switch can be set to operate.
Scale reading
The dierential between the oil pump pressure and the pressure in the crankcase that exists at the moment the
contact system cuts in current to the time relay on falling oil pressure.
Operating range
The pressure range on the LP connection within which the switch can operate.
Contact dierential
The pressure rise above the set dierential pressure (scale reading) necessary to cut o current to the time relay.
Release time
The period for which the dierential pressure switch allows the compressor to run with too low an oil pressure
during start-up and operation.
Dimensions and weight
Figure 5: Dimensions and weight for type MP 54, MP 55 and MP 55A
Danfoss 60B109.12
Net weight:
approx. 0.8 kg
© Danfoss | Climate Solutions | 2021.02 AI211986438834en-000901 | 5
Dierential pressure switch, Type MP 54, 55 and 55A