Mars Jard Low Pressure Switch M43941

The Mars M43941 is a low pressure switch from the Jard product line.

Aftermarket pressure controls from established lines such as Jard cover a wide range of original equipment applications, which makes them practical stock for service work across varied equipment.

What must be matched when substituting is more than the pressure setting. The switch action, whether it opens on rise or on fall, must correspond. The differential must be appropriate to the application. The electrical rating must suit the circuit it is switching, since a control switching a contactor coil is in pilot duty service and one switching a compressor directly is not. The connection type and thread must match the port it fits. And the reset behaviour, automatic or manual, must be the same as the original.

Substituting on pressure setting alone is the error that produces controls which fit and appear correct but behave differently from the original in some respect that only becomes apparent under fault conditions.

Where the original specification is unclear, the equipment manufacturer's data rather than the outgoing part is the more reliable reference, since the outgoing part may itself have been a poor substitution.

Applications include commercial refrigeration and air conditioning systems.

Brand

Mars

SKU

M43941

Category

Pressure Switches

Weight

0.2 lbs

Dimensions

3.50" x 2.00" x 1.50"

Price

$23.00

Availability

In stock (3 available)

Rating

0 / 5.0