Jabsco 37121-0010 Pressure Switch for 36950 Series Water Pumps

The Jabsco 37121-0010 is a replacement pressure switch designed for 36950 series water pumps. This switch kit restores automatic pump operation by sensing system pressure and cycling the pump motor on and off as demand changes, which is the core function that keeps a fresh water system running without manual intervention.

Built for 12V DC marine electrical systems, the switch uses a normally open contact design with a plunger-style actuator that responds to pressure changes in the pump housing. The switch body is constructed of brass for corrosion resistance in a marine environment, and it mounts directly to the pump housing using a surface mount configuration with screw terminals for the electrical connections.

This is a direct fit replacement part for Jabsco 36950 series water pumps, making it a straightforward swap when the original pressure switch fails or begins cycling erratically. Because it ships as a complete switch kit, no additional hardware sourcing is needed to complete the replacement.

Specifications

• Brand: Jabsco
• Manufacturer Part Number: 37121-0010
• Product Type: Pressure Switch
• Voltage: 12V DC
• Material: Brass
• Contact Type: Normally Open
• Actuator Type: Plunger
• Mounting Type: Surface Mount
• Terminal Type: Screw
• Compatible Pumps: 36950 Series Water Pumps
• UPC: 671880032971
• Weight: 0.3 pounds

Fitment

• Jabsco 36950 series water pumps

Frequently Asked Questions

What pumps does the Jabsco 37121-0010 pressure switch fit? The Jabsco 37121-0010 is a replacement pressure switch for 36950 series water pumps.

What voltage is the Jabsco 37121-0010 pressure switch rated for? This switch is rated for 12V DC marine electrical systems.

What is the pressure switch made of? The 37121-0010 switch body is made of brass for corrosion resistance in marine environments.

How does the pressure switch mount to the pump? It uses a surface mount configuration that attaches directly to the 36950 series pump housing.

What type of electrical contact does this switch use? The Jabsco 37121-0010 uses a normally open contact design with a plunger-style actuator that responds to pressure changes.

How are the electrical connections made on this switch? The 37121-0010 pressure switch uses screw terminals for wiring the electrical connections.

Is this a genuine Jabsco part? Yes, part number 37121-0010 is a genuine Jabsco replacement switch kit for 36950 series pumps.

What is included in the switch kit? The Jabsco 37121-0010 kit includes the replacement pressure switch for installation on a 36950 series water pump.

How much does the pressure switch weigh? The Jabsco 37121-0010 pressure switch weighs 0.3 pounds.

Why would I need to replace this switch? A pressure switch is typically replaced when a 36950 series water pump fails to cycle on and off properly or stops responding to pressure changes.

Can I install the 37121-0010 switch myself? The 37121-0010 is a direct fit replacement that mounts to the existing 36950 series pump housing using its screw terminal connections.