4-20mA Out of Range Trip Amp Relay

Available for backorder
  • Weight
    0.1 kg
  • SKU
    NTR-305

A monitoring relay designed to monitor the integrity of a 4 to 20 mA signal.

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A monitoring relay designed to monitor the integrity of a 4-20 mA signal rather than control a process, applications include safeguarding a system against potentially faulty transmitters or transducers where the output could on fault rise above 20 mA or fall below 4 mA but not reaching zero. Available in either a din rail or 8 & 11 pin plug in housing with a SPCO output (SPNO in the din rail version). The output relay will be energized when the monitored signal is between 4 & 20 mA. The output relay will de-energise after an adjustable time delay up to 60 seconds if the monitored signal should fall below 3.5 mA or rise above 20.5 mA. There is a fixed hysteresis of 0.5 mA therefore if the monitored signal falls back within the 4-20 mA band the output relay will re-energise. If the auxiliary supply to the relay is lost at any time the output relay if energised will de-energise immediately.

We carry a selection of the full range of options listed in the datasheet. Non-stocked configurations may be available but may be subject to minimum order quantities or different pricing. Contact Us for more information.

  • Power supply: Isolated 24 VDC
  • Power Consumption: 3 VA max
  • Nominal supply tolerance: ±15%
  • Hysteresis: Fixed 0.5mA
  • Repeat accuracy: ±2% at constant ambient
  • Input Range: 4 to 20 mA adjustable
  • Output contacts: SPCO 8 A @250 VAC
  • Max breaking capacity: SPCO 2000 VA
  • Mechanical life: 30 Million ops
  • Electrical life: 200K ops at max rated load
  • Manufacturer's P/N: YRTP

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

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