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MPL 9370 Series switches offer pressure, vacuum and differential models capable of sensing very low setpoints, and switching current up to 5A resistive, 2.5A inductive. Designed for use in the HVAC industry, where reliable air proving is critical to both performance and customer safety, the MPL 9370 is a favorite with leading manufacturers of gas-fired warm air furnaces and water heaters.
Smaller and lighter than any other HVAC pressure switch, the MPL 9370 is built for the same temperature range and operating life as conventional switches made of stamped steel.
The MPL 9370 will perform equally well in other applications which demand low OEM unit cost, robust design, setpoint accuracy, and high reliability.
The MPL 9370 features a unique integral snap switch, with positive snap action and self-wiping silver contacts for ultra-reliable switching. The molded silicone diaphragm converts very low pressure or vacuum into movement of an actuator disk, which operates the silver alloy contacts.
Body: glass-filled polyester, grade SEO
Diaphragm: post-cured silicone rubber
Terminals: 0.032" x 0.250" copper alloy
Contacts [9370]: fine silver alloy, point-and-dome
Contacts [9371]: gold-platinum-silver alloy, crossbar
Actuator: stainless steel
Springs: stainless steel, phosphor bronze
Operating Temperature: -40 to +85C (-40 to +185F)
Pressure:
Operating: 0.15 in/H 2 O to 34 in/H 2 O
Proof: 100 in/H 2 O (3.6 psi)
Burst: 5 psi minimum
Form: SPDT
Resistance: Initial: <50 milliohms
The MPL 9370 (fine silver contacts) is designed for application between 100mA minimum and 5A (resistive) maximum. MPL 9371 (gold-platinum-silver alloy) is designed for low-current control circuits, with loads between 15mA minimum and 0.5A maximum.
The MPL 9370 and MPL 9371 have been subjected to rigorous life cycle and environmental testing, and are recognized by UL and CSA for application under Standard 353, Pilot Duty and Standard 508, Industrial Control.
The MPL 9370 can be mounted with diaprhagm perpendicular or parallel to level, as required by application (Orientation must be included in user specifications. Perpendicular mounting recommended.) Standard mounting brackets are lightweight metal with unique features for flexible orientation of pressure port. |
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