Dold MK 9151N Series Liquid Level Relay -, DIN Rail 1 Voltage Input 24 V-Rated Relay

RS Stock No.:: 240-9005
Mfr. Part No.:: MK9151.11 2-450kOhm DC24V
Manufacturer:: Dold

Dold MK 9151N Series Liquid Level Relay -, DIN Rail 1 Voltage Input 24 V-Rated Relay

Subtotal (1 unit)*

HK$1,064.70

FREE delivery for orders over HK$250.00

In Stock

3 unit(s) ready to ship from another location
Plus 9 unit(s) shipping from 16 February 2026

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

Units	Per unit
1 +	HK$1,064.70

*price indicative

RS Stock No.:: 240-9005
Mfr. Part No.:: MK9151.11 2-450kOhm DC24V
Manufacturer:: Dold

Specifications

Product overview and Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Dold
	Number of Inputs	1
	Product Type	Liquid Level Relay
	Probe Voltage	10V ac
	Overall Length	82mm
	Mount Type	DIN Rail
	Overall Depth	99 mm
	Response Time	20s
	Minimum Operating Temperature	-20°C
	Terminal Type	Clamp
	Maximum Operating Temperature	60°C
	Maximum Supply Voltage	24V
	IP Rating	IP20
	Overall Width	22.5mm
	Standards/Approvals	CE
	Hazardous Area Certification	No
	Series	MK 9151N
	Number of Outputs	2
	Output Type	Relay
	Input Type	Voltage
	Current Rating	4 A

	Select all
	Brand Dold
	Number of Inputs 1
	Product Type Liquid Level Relay
	Probe Voltage 10V ac
	Overall Length 82mm
	Mount Type DIN Rail
	Overall Depth 99 mm
	Response Time 20s
	Minimum Operating Temperature -20°C
	Terminal Type Clamp
	Maximum Operating Temperature 60°C
	Maximum Supply Voltage 24V
	IP Rating IP20
	Overall Width 22.5mm
	Standards/Approvals CE
	Hazardous Area Certification No
	Series MK 9151N
	Number of Outputs 2
	Output Type Relay
	Input Type Voltage
	Current Rating 4 A

Datasheet - IL9151

COO (Country of Origin):: DE

MK 9151 - level relay

The MK9151 is used for

Level monitoring and control of conductive liquids and powders, e.g. maximum and minimum fill level, protection against overfilling and dry running

Monitoring and control of the mix ratio for conductive liquids

General resistance monitoring, e.g. recording temperature limits with PTC (device to IEG 255, VDE 0435 section 303)

Features

3 electrode connections for 2-point and 1-point level control

The metering circuit galvanically isolated from the mains is immune from high levels of interference

Max. lead length to the electrodes: 1500 m

Wide setting range: 2 → 450 kΩ which enables differentiation between liquid and foam

Adjustable response and fallback delay: 0.2 → 20 s

Programmable for working current principle (without bridge) or rest current principle (X1-X2 and/or X1-COM bridge)

2 LEDs to indicate operating readiness and contact position

1 changer

Overall width 22.5 mm, protection class IP40

Liquid Level Relays are used to monitor the levels of conductive liquids, and are available in Up/Down, Minimum, Maximum, and Fill/Empty variations. Liquid Level Relays are straightforward to install and safe to use.

Application Examples

Liquid Level Relays (Conductive Level Sensors) are used in a wide variety of applications including waste water management and the monitoring and management of corrosive liquid media, and designed specifically to provide for the:

Monitoring and control of liquid levels

Protection of pumps against dry running

Ability to detect liquid leaks in a system

Control of media mixing ratios

Control of liquid levels