Home / Controls, safety & Regulation / Pressure switches / Type: MA1, snap action contact pressure switch, field adjustable, SPDT contact
DIMENSIONS
Uses: High electrical rating, for 250V.
Main applications: Pressure sensing on water heaters, boilers, spas and swimming pool heaters and filters, electrical appliances used outside.
Membrane: EPDM, dia 45 mm. Silicone or NBR on request.
Fluid: water or air.
Fitting: Brass (stainless steel on request).
Pressure: positive.
Housing: PA66, UL94 VO, IP65, PG11 cable gland.
Contact: SPDT, snap action. NO or NC contacts available with MOQ.
Electrical rating: Depends on micro-switch operating force that is linked to the electrical rating.
– Standard rating micro-switch (medium and high pressure calibration only): 16A 125/250VAC;1/2HP 125VAC; 3/4HP 250VAC.
– High rating micro-switch (medium and high pressure calibration only): 2HP 240V, 21(8) A 240V (UL, CSA VDE switch).
– Low force micro-switch (set points less than150 mbar): 1/4HP 6(1) A 240V ( UL, CSA VDE switch).
– On request: up to 25A 250V.
Action: momentary.
Set point calibration: Field adjustable with knob.
Adjustment ranges (mbar): 25-100 (code 010) ; 50-400 (code 040) ; 100-800 (code 080) ; 200-1500 (code 150).
Electrical connection: screw terminals.
Maximum pressure: 6 bars (87 PSI).
Ambient temperature limits: 0 to 85°C.
Available pressure inlet fittings ①
References ( SPDT contact, brass fitting, adjustment range 50 to 400 mbar ):
Pressure inlet | Standard rating micro- switch | Low pressure micro-switch | High rating micro-switch |
1/8″ NPT | MA10U145H040DE00 | MA10U540H040DE00 | MA10U647H040DE00 |
1/8″ BSPT | MA10U145L040DE00 | MA10U540L040DE00 | MA10U647L040DE00 |
1/8″ BSPP | MA10U145D040DE00 | MA10U540D040DE00 | MA10U647D040DE00 |
1/4″ NPT | MA10U145K040DE00 | MA10U540K040DE00 | MA10U647K040DE00 |
1/4″ BSPT | MA10U1452040DE00 | MA10U5402040DE00 | MA10U6472040DE00 |
1/4″ BSPP | MA10U1453040DE00 | MA10U5403040DE00 | MA10U6473040DE00 |
Smooth spout dia 4mm | MA10U145E040DE00 | MA10U540E040DE00 | MA10U647E040DE00 |
Spout dia 6mm | MA10U145F040DE00 | MA10U540F040DE00 | MA10U647F040DE00 |
Fluted spout dia 6mm | MA10U145G040DE00 | MA10U540G040DE00 | MA10U647G040DE00 |
Barbed spout dia 10mm | MA10U145J040DE00 | MA10U540J040DE00 | MA10U647J040DE00 |
Other set point values: replace 040 in the product reference by 015, 080 or 150.