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Process Controller, IR33 Series, Universal, 12 to 24 Vac, 12 to 30 Vdc, 2x Relay Outputs


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IR33W7LR20   Datasheet
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NTC, PTC, Pt1000






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Technical Documents (2)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
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Product Overview

The IR33W7LR20 from Carel is a universal electronic digital temperature controller with 2 relay output. IR33 controller can be programmed quickly using the optional programming key and reduces the risk of errors. Controller features a simple user interface, two independent control loops and it is housed in a compact panel mounting enclosure. This controller can be connected to a network for monitoring and programming using the optional RS485 serial interface.
  • NTC/PTC/PT1000 input
  • Auxiliary power of 12VAC to 24VAC, 12VDC to 30VDC
  • Frequency range from 50Hz to 60Hz
  • Plug-in terminals
  • Product weight of 220g
  • CE marked
  • IP65 enclosure case
  • Operating temperature range from -10°C to 50°C
  • Humidity of <90% rH (non-condensing)



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More stock available week commencing 8/28/23
Standard lead time for this product is 22 weeks.

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Due to market conditions delivery times are for general guidance only and may be subject to change at short notice


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