23

Mechanical pressure switches

Principal technical data

Principal technical data

Valid for all pressure switches of the DCM, DNM, DWAM, DWAMV, SDBAM, VCM, VNM, DNM, DWR, DGM,

DNS and DDCM series that have a microswitch. The technical data of type-tested units may differ slightly

(please refer to particular type sheet).

Standard version

Plug connection

Terminal connection

…200

…300

Switch housing

Pressure connection

Switching function and

connection scheme

(applies only to version

with microswitch)

Switching capacity

(for microswitches with

a silver contact)

Mounting position

Protection class

(in vertical position)

Electrical connection

Cabel entry

Ambient temperature

Switching point

Hysteresis

Medium temperature

Relative humidity

Vacuum

Repetition accuracy

of switching points

Vibration resistance

Mechanical durability

(pressure sensor)

Electronical durability

(microswitch)

Isolation values

Oil and grease-free

Diecast aluminium GDAISi 12

G 1/2" external thread (pressure gauge

connection) and G 1/4" internal thread.

1/4" internal thread for DDCM differential

pressure switches

Floating changeover contact.

With rising pressure

single pole switching

from 3–1 to 3–2.

8 A at 250 VAC

5 A at 250 VAC inductive

8 A at 24 VDC

0.3 A at 250 VDC

min. 10 mA, 12 VDC

Preferably vertical (see technical data sheet)

IP 54

Plug connection

Pg 11

–25 to +70 °C (exceptions:

DWAM, DWAMV, SDBAM series –20 to +70 °C

DGM and FD series: –25 to +60 °C

DCM4016, 4025, 1000,

VCM4156: –15 to +60 °C)

Adjustable using the setting spindle (for 300 device:

after removing switch housing cover)

Adjustable or not adjustable

(see Product Summary)

Max. 70 °C, briefly 85 °C

15 to 95 % (non-condensing)

Diecast aluminium GDAISi 12

G 1/2" external thread (pressure gauge

connection) and G 1/4" internal thread.

1/4" internal thread for DDCM differential

pressure switches

Floating changeover contact.

With rising pressure

single pole switching

from 3–1 to 3–2

3 A at 250 VAC

2 A at 250 VAC inductive

3 A at 24 VDC

0.1 A at 250 VDC

min. 2 mA, 24 VDC

Vertical

IP 65

Terminal connection

M 16 x 1.5

–25 to +70 °C (exceptions:

DWAM, DWAMV, SDBAM series –20 to +70 °C

DGM and FD series: –25 to +60 °C

DCM4016, 4025, 1000,

VCM4156: –15 to +60 °C)

Adjustable using the setting spindle once the

switch housing cover is removed

Adjustable or not adjustable

(see Product Summary)

Max. 70 °C, briefly 85 °C

15 to 95 % (non-condensing)

Higher medium temperatures are possible provided the above limits for the switching device are

ensured by suitable measures (e.g. siphon). All pressure switches can operate under vacuum.

This will not damage the device (exception DCM1000).

< 1 % of the working range (for pressure ranges > 1 bar).

No significant deviations up to 4 g.

With sinusoidal pressure application and room temperature, 10 x 106 switching cycles. The expected life

depends to a very large extent on the type of pressure application, therefore this figure can serve only as

a rough estimate. With pulsating pressure or pressure impacts in hydraulic systems, pressure surge

reduction is recommended.

100.000 switching cycles at nominal current 8 A, 250 VAC.

A reduced contact load increases the number of possible switching cycles.

Overvoltage category III, contamination class 3, reference surge voltage 4000 V.

Conformity to DIN VDE 0110 is confirmed.

The parts of all pressure switches in contact with the medium are oil and grease-free

(except the HCD…and DPS…series). The sensors are hermetically sealed and contain no seals

(also see ZF1979, special packing).