Murphy Level Switch L971

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The L971 Level Switch is designed for Ingersoll-Rand Type 30, Type 40 and ESH compressors, yet it can be adapted to fit other compressors that have an inspection plate extending below normal operating oil level. It installs with minimal downtime and has a two-year limited warranty.

Durable Low Level Switches.

Installs with Minimal Downtime

Technical Data

Murphy SKU:sc-5425 Category: Tag: Brand:

Available on backorder


Introducing the L971 Series Level Switch! Ideal for monitoring compressor crankcase oil levels, it triggers an alarm or shutdown when oil levels fall below a set limit. With a 1/2 NPT connection, explosion-proof enclosure, and a robust SPDT snap-switch, this switch ensures reliable performance. Choose from a rigid polyurethane foam float or upgrade to a 304 stainless steel float on select configurations. Keep your equipment protected effortlessly.

Additional information

Weight1.2 kg


Operating Temperature Range: -15 to 275°F (-26 to 135°C) Maximum Working Pressure: 30 psi (206 kPa) [2.06 bar] Switch Rating: 4 A @ 250 VAC Case: Aluminum (explosion-proof) Mounting Adaptor: Brass Floats: Rigid polyurethane. 304 stainless steel available on L971-C only Other Wetted Parts: 303, 304, and 316 stainless steel O-Ring Seals: Viton and Buna Process Connection: 1/2 NPT Hazardous Location Rating: UL and CSA listed for Class I, Groups C & D; Class II, Groups F & G. Enclosure Type / Ingress Protection Rating: IP66 per IEC 60529. Conduit Connection: 1/2 NPT Wire: 18 AWG (0.75 mm2) Shipping Dimensions: 8-1/4 x 4-1/4 x 4-1/2 in. (210 x 108 x 114 mm)