Supco SMR410 Pressure Switch

SMR410 is the direct replacement for P100DA-1, 43313, 5709

Supco SMR410 High Pressure Switch | 410 PSI Cut-Out | Manual Reset | SPST

The Supco SMR410 Pressure Switch is a high-precision manual reset high pressure switch designed for reliable protection in HVAC and refrigeration systems. This SPST (single pole, single throw) switch opens on pressure rise at 410 PSI, providing dependable overpressure protection to safeguard compressors, piping, and system components.

Built with a snap-acting stainless steel hermetically sealed sensor, the SMR410 delivers consistent performance, excellent setpoint repeatability, and long service life. Its direct-mount, non-adjustable design features a ¼" SAE 45° female flare fitting with valve core depressor, making installation quick and secure. Compatible with a wide range of refrigerants, including A2L refrigerants, the SMR410 is ideal for commercial and residential applications.

Key Features & Benefits:

• Manual reset high pressure switch – opens on pressure rise

• Cut-Out Pressure: 410 PSI ±15 PSI

• Non-adjustable SPST design for simplicity and reliability

• Compatible with HFC, HCFC, CFC, and A2L refrigerants

• Snap-acting stainless steel hermetically sealed sensor

• ¼" SAE 45° female flare fitting with valve core depressor

• Excellent setpoint repeatability and stability

• Rated for 100,000 cycles at full load

• Wire: 18 AWG, 18" long

• High burst pressure rating: 1521 PSI

Electrical Specifications:

• Rated Voltage: 24 / 120 / 240 VAC @ 50/60 Hz

• DC Voltage: 6 VDC / 12 VDC / 36 VDC

• Maximum FLA:

  • 5.8 Amps @ 120 VAC

  • 2.9 Amps @ 240 VAC

• Maximum LRA:

  • 34.8 Amps @ 120 VAC

  • 17.4 Amps @ 240 VAC

Environmental Specifications:

• Ambient Temperature: -31°F to 149°F (-35°C to 65°C)

• Fluid Temperature: -31°F to 275°F (-35°C to 135°C)

• Burst Pressure: 1521 PSI

Product Details:

• Brand: Supco

• Model: SMR410

• Product Type: High Pressure Switch

• Function: Opens on pressure rise, manual reset

• Connection Type: ¼" SAE 45° female flare

• Approvals: UL® Recognized, CE®

• Condition: Brand New

Applications:

• HVAC systems

• Commercial and residential refrigeration

• Compressor overpressure protection

• Air conditioning and heat pump systems

⚠ Proposition 65 Warning:
This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm.

The Supco SMR410 High Pressure Switch provides accurate, reliable, and durable overpressure protection, making it a trusted choice for HVAC and refrigeration professionals.