Model 341

SKU: 341

Alarm, One Relay, 4-20mA

The Delta Controls Model 341 Alarm modules are configured in the three inch discrete element modeling (DEM) package. These stand-alone devices can be used as alarms or control devices. From one to three units can be mounted in a Delta housing to provide various switch-sequencing functions. They may be surface mounted in user’s panels and cabinets. They may also be added to housings containing 4-20 mA transmitters to provide pump control, alarm, etc. Note that the modules are not loop powered and require a 24 DCV power source. This can be provided by the user, or from an integrally mounted isolated power supply module (option ‘PS’).


  • Available for mounting in Delta Controls housings or in enclosures by others
  • Housings may be surface or pipe stand mounted
  • Optional direct reading LCD display
  • Accepts 4-20 mA dc signal from any type transmitter; 2, 3, or 4-wire
  • Supplies DC power for 2 wire loops, and for 3 or 4 wire transmitters
  • Field selectable fail-safe action
  • Optional pump control functions
  • Adjustable time delays on relay operation
  • Built-in loop power supply
  • Will not lose memory
  • Optional explosion-proof housing


  • Sealed SPDT Relay: 5 A @ 240 ACV or 30 DCV
  • Setup:Setpoint, differential, direct/ reverse, time delay, blind/display
  • Package: Sealed Relay, All potted in a 3 in DEM module cup
  • Power:15 DCV to 32 DCV, 1.5 V
  • Optional Power Supply: > 24 DCV, 150 mA

Certifications & Approvals

  • Explosion-proof
    Housing Option:
    Third Party Listed by CSA
    NRTL/C (USA and Canada)
    Class I, Groups B, C and D;
    Class II, Groups E, F and G;
    Class III; Encl 4X

Required Ordering Information

  • Detailed model number
  • Tag or nameplate detail (if required)
  • Documentation/testing tiers (if required, refer to Additional Resources in the product catalog)

Additional Information


Alarm, One Relay, 4-20mA

Level Measurement


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