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Honeywell C437D2011 Pressure Switch, Manual Reset, 1/2 PSI to 5 PSI

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Regular Price: $310.19

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Special Price $248.15

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    Additional 5% Off with purchase of $1000+. Coupon Code "5off1000". Valid through 06/30/2020.

    Product Description

    C437D,E Series 2000 Gas Pressure Switches are pressure-actuated devices used in industrial gas systems for safety shutoff. Series 2000 models have snap acting MicroSwitch snap switches to open a circuit on pressure rise or drop.
    • Use C437 for SPST (non-mercury) switching.
    • Models intended for lockout applications must be manually reset before resuming operation.
    • Models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa)compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel.
    • Impede tampering and provide dust-resistant operation with enclosed setting.
    • Increase strength of control diaphragm with Buna N fiber-reinforced material.
    • Two Buna-N fiber-reinforced seal-off diaphragms for added reliability.
    • Clear glass cover allows observation of interior mechanism to aid in setting and checkout.


    General Characteristics

    ApplicationIndustrial gas system applications for safety shutoff, pressure control, or differential-pressure control.
    Dimensions (in.)7 3/4 in. high x 6 1/4 in. wide x 3 7/16 in. deep
    Dimensions (mm)197 mm high x 159 mm wide x 87 mm deep
    MaterialsCase: Die-cast aluminum
    Approvals, Underwriters Laboratories Inc.Listed: File No. MP2168, Guide No. MFHX
    Approvals, Canadian Standards AssociationCertified: File No. LR1620, Guide No. 380-W-1.16
    Electrical ConnectionsScrew terminals
    Temperature Ratings (C)52 C - Maximum Ambient
    Temperature Ratings (F)125 F - Maximum Ambient
    Contact Ratings120 Vac Switch Contact-- 8.0 AFL, 48.0 ALR, 10.0 A resistive; 240 Vac Switch Contact-- 5.1 AFL, 30.6 ALR, 5.0 A resistive
    Operating Temperature Range (F)32 F to 125 F
    Operating Temperature Range (C)0 C to 52 C
    Approvals, Swiss REAcceptable
    Approvals, Factory MutualApproved: Report No. 22018, 24127, J.I.IF4A3.AF
    Sensor ElementBUNA N Diaphragm
    Operating Range (psi)1/2 to 5 psi; 15.0 psi - Maximum Sustained
    Operating Range (kPa)3.0 to 35 kPa; 103.4 kPa - Maximum Sustained
    Differential Pressure Range (psi)1/2 psi
    Differential Pressure Range (kPa)3.45 kPa
    Differential TypeSubtractive
    Switch OperationManual Reset
    Switching ActionSPST, break on rise, non-mercury
    Pipe ConnectionMain or High Pressure--1/2 in. NPT internal thread; Vent or Low pressure--1/8 in. NPT internal thread

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