Merrill Manufacturing MPSHD4060 Pressure Switch 40-60 Psi

Product Description

The MERRILL MANUFACTURING MPSHD4060 is a heavy-duty pressure switch designed to control electrically driven water pumps in residential and light commercial plumbing systems. It operates on a 40 PSI cut-in and 60 PSI cut-off setting, with the cut-off pressure being adjustable to suit system requirements. The switch is rated for 2 horsepower at 230 volts single-phase and is also compatible with 115-volt circuits. Oversized silver contacts extend service life under frequent cycling conditions. At 0.88 pounds, this is a compact, direct-replacement unit intended for installation by licensed plumbers or pump service technicians.

This pressure switch is suited for residential well pump systems and similar applications where reliable automatic pump cycling is required. It is packaged individually and is sold as an OEM-style replacement part, making it appropriate for direct swap-outs in existing pump control installations. The adjustable cut-off pressure allows the technician to fine-tune system pressure to match the connected pressure tank and distribution requirements without replacing the entire switch assembly.

Key Features

• 40 PSI cut-in and 60 PSI cut-off pressure range with adjustable cut-off
• Rated 2 HP at 230 volts single-phase; compatible with 115-volt systems
• Extra-large silver contacts for extended service life and reduced arcing
• Heavy-duty construction suited for demanding pump cycling applications
• Individually boxed OEM replacement format for straightforward field swaps

Compatibility

Designed as an OEM-style replacement pressure switch for electrically driven residential water pump systems operating within a 40-60 PSI pressure range.

Installation Notes

Installation should be performed by a licensed plumber or qualified pump technician. Before servicing, shut off electrical power to the pump circuit at the breaker and relieve system pressure before disconnecting any fittings. The switch must be wired in accordance with NEC requirements for the voltage and horsepower rating of the connected pump motor. Verify the pressure tank pre-charge is set correctly before adjusting the cut-off pressure on the new switch.