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Controls and Safety : Level Switches
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Type DM4
Type DM4
Vertical mounting, reed switch contact, polypropylene stem with M8 thread, dia. 29 × 16.4mm EPS foam float, cable output, for near bottom level detection
Controls and Safety
Level Switches
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product presentation

Use: low voltage circuits
Main applications: vending machines, air conditioning pumps, dehumidifiers. Small diameter float for reduced space applications. EPS foam float avoid float leaks, but reduces the maximum liquid temperature
Stem material: polypropylene
Float material: EPS foam with skin effect surface to avoid water absorption
Mounting: Vertical, throw wall, with M8 nut and flat NBR gasket
Contact configuration: normally closed when float is down on the stem. It opens when float goes up to the wiring side. Upsetting the float changes the contact configuration into normally open
Electrical rating:
Low voltage type: maximum power 10 W (VA), max 0.5Amp, max voltage 110VAC.

230VAC type: max power 40 W (VA), max 1Amp. Values for resistive circuit. For inductive or capacitive loads, a contact protection circuit must be used.

Contact resistance: 150 mOhms maxi ( wires not included)
Wires: AWG24 cable, UL style 2464, PVC insulated, length 100, 500, 1000 or 2000mm
Liquid limits: to be used with liquids chemically compatible with polypropylene and polystyrene, specific gravity higher than 0.9, dynamic viscosity higher than 0.5 × 10-4 Pa.s and lower than 10-2 Pa.s, without magnetic particles.

Ambient temperature: -20+65°C
Maximum pressure: 1 bar (15 PSI)
Options: other cable length, electrical rating 70W, 1A, 250VAC.