Dold Monitoring Relay, DPDT, DIN Rail, DC 12, 24, 48 V, 115 V ac, 230 V ac

RS Stock No.:: 181-2790
Mfr. Part No.:: MK9837N.12 5-600Hz UH=AC230V
Brand:: Dold

Dold Monitoring Relay, DPDT, DIN Rail, DC 12, 24, 48 V, 115 V ac, 230 V ac

Subtotal (1 unit)*

£226.58

(exc. VAT)

£271.90

(inc. VAT)

FREE delivery for orders over £50.00

Temporarily out of stock

Shipping from 06 April 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	£226.58

*price indicative

RS Stock No.:: 181-2790
Mfr. Part No.:: MK9837N.12 5-600Hz UH=AC230V
Brand:: Dold

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Dold
	Product Type	Monitoring Relay
	Contact Configuration	DPDT
	Mount Type	DIN Rail
	Terminal Type	Screw
	Time Delay	0 to 100 s, 0 to 50s
	IP Rating	IP20, IP40
	Minimum Operating Temperature	-20°C
	Supply DC Voltage	DC 12, 24, 48 V
	Supply AC Voltage	115 V ac, 230 V ac
	Maximum Operating Temperature	60°C
	Width	22.5 mm
	Length	97mm
	Series	MK9837N
	Standards/Approvals	CCC, CE, RoHS
	Height	90mm

	Select all
	Brand Dold
	Product Type Monitoring Relay
	Contact Configuration DPDT
	Mount Type DIN Rail
	Terminal Type Screw
	Time Delay 0 to 100 s, 0 to 50s
	IP Rating IP20, IP40
	Minimum Operating Temperature -20°C
	Supply DC Voltage DC 12, 24, 48 V
	Supply AC Voltage 115 V ac, 230 V ac
	Maximum Operating Temperature 60°C
	Width 22.5 mm
	Length 97mm
	Series MK9837N
	Standards/Approvals CCC, CE, RoHS
	Height 90mm

Datasheet

COO (Country of Origin):: DE

Detection of over- or under frequency of alternating voltage (adjustable function)

Fast reaction time by measuring duration of cycle of input frequency

Universal measuring input for AC-voltages of 15 ... 280 V as well as 30 ... 550 V

As option with measuring input for inverters

Adjustable hysteresis

Adjustable monitoring time for missing input signal at function over frequency

Response delay programmable via terminals 0 ... 100 s

Alarm storing or auto-reset programmable via terminals

Galvanic separation between measuring input, auxiliary voltage and output contacts

MH 9837 available with wide input range for auxiliary supply (AC/DC 24 ... 60 V or AC/DC 110 ... 230 V)

2 changeover contacts, closed circuit operation

Open circuit operation on request

LED indication for auxiliary voltage, measuring voltage and alarm status

MH 9837.12/008: with galvanic separated analogue output (current/ voltage) and 11 step LED chain for the actual frequency

Device available with 2 response values and separately controlled output relays for under- and over frequency see MK 9837N/500

Dold Monitoring Relay, DPDT, DIN Rail, DC 12, 24, 48 V, 115 V ac, 230 V ac

FREE delivery for orders over £50.00

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