ABB SWM4/RN Water Detector with Relay (SKU: SWM4RN)

Description

Introduction

The ABB SWM4/RN (Product ID: GHQ4030001R0012) is a resin-encapsulated surface-mounted water detector designed to protect commercial and residential infrastructure from liquid ingress. Equipped with gold-plated Termipoint pins, this reliable sensor detects early-stage water leaks—such as pipe fractures, groundwater or sewage ingress, and appliance overflow from washing machines or dishwashers—before major financial or structural damage occurs. This device is part of our professional Accessories range.

Operating on an external 10 to 23 V DC power supply, the SWM4/RN features a potential-free changeover contact output, an integrated LED display, and an LED parallel output. Once the affected area dries out, the unit automatically resets itself, offering continuous monitoring without manual intervention.

Key Features

• Resin-encapsulated surface-mounted housing designed for robust water detection.
• Gold-plated Termipoint pins for reliable detection of pipe fractures, sewage, or appliance leaks.
• 1 potential-free changeover contact output for switching signal integration.
• Power supply requirement of 10 to 23 V DC external voltage source.
• Maximum switching current rating of 0.5.
• Output voltage Uout rated at 12 V DC with a power loss of 0.09 W.
• Visual indicator system featuring an onboard LED display and LED parallel output.
• Automatic reset functionality upon drying of the detection area.

Benefits

• Gold-plated Termipoint pins ensure durable and sensitive detection of liquid ingress across various installation environments.
• Equipped with a potential-free changeover contact output to easily integrate leak alarms into wider building management or monitoring systems.
• Features an integrated LED display alongside an LED parallel output for clear local visual status monitoring.
• Resin-encapsulated design protects internal electronics against environmental exposure and harsh operational conditions.
• Automatic self-resetting mechanism clears the alarm state once the sensing pins dry out, minimizing maintenance requirements.
• Low power loss of 0.09 W ensures energy-efficient continuous operation across demanding commercial and residential applications.

Technical Specifications

Specification	Value
Extended Product Type	SWM4/RN
Product ID	GHQ4030001R0012
Display Name	SWM4/RN
Instructions and Manuals	2CDG941131P0001
Number of Outputs	1
Manual Operation	No
Number of Batteries	0
E-Number (Norway)	4546718
Declaration of Conformity – CE	9AKK107046A4020
EAN	4013232057502
Catalog Description	SWM4RN Water Detector with Relay, 12 V
E-Number (Switzerland)	961814203
WEEE B2C / B2B	Business To Consumer
Manufacturer Description	A resin-encapsulated water detector with gold-plated Termipoint pins, detects water ingress, e.g., pipe fractures, ingress of groundwater and sewage, water damage caused by washing machines and dishwashers etc. before the damage becomes too expensive. With a potential free chang…
Output Voltage (U<sub>out</sub>)	12 V DC
Maximum Switching Current	0.5
Power Loss	0.09
Wiring Diagram	9AKK108469A6918
Mounting Type	Surface Mounted
Data Sheet, Technical Information	2CDG941131P0001
Color	white
Product Net Width	44
Product Net Height	40
Product Net Depth / Length	23
Product Net Weight	0.204

Applications

• Monitoring utility rooms and mechanical areas prone to pipe fractures, groundwater ingress, or sewage backup.
• Protecting commercial and residential spaces by detecting overflows near washing machines, dishwashers, and water-using equipment.
• Integrating localized water leak alerts into broader automation systems via the potential-free changeover output contact.

Installation Notes

• Mount the resin-encapsulated device on surfaces where water pooling or liquid ingress is most likely to occur.
• Connect the unit to a stable external 10 to 23 V DC power supply in accordance with wiring diagram 9AKK108469A6918 and technical document 2CDG941131P0001.
• Utilize the potential-free changeover contact output and LED parallel output to connect external signalling or alarm devices as needed.

Developer Resources

• Technical Data Sheet and Manual: Document ID 2CDG941131P0001
• Wiring Diagram Reference: Document ID 9AKK108469A6918
• CE Declaration of Conformity: Document ID 9AKK107046A4020

FAQ

What power supply is required for the ABB SWM4/RN water detector?

The device operates on an external power source delivering between 10 V DC and 23 V DC. Explore more ABB building automation products for professional building automation projects.

Does the SWM4/RN require manual resetting after detecting water?

No, the detector resets automatically once the affected monitoring area dries out. For certificates and current technical files, refer to the official product documentation.

What type of outputs does the ABB SWM4/RN provide?

It provides 1 potential-free changeover contact output, an LED parallel output, and a visual LED display.

How is the detector installed?

The ABB SWM4/RN is surface mounted at the desired leak monitoring location according to wiring diagram 9AKK108469A6918.

What is the exact product model?

The order/model code for this page is SWM4RN. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by ABB.

Conclusion

The ABB SWM4/RN water detector with relay (SKU: SWM4RN) provides dependable surface-mounted leak protection for critical infrastructure. Featuring gold-plated pins, potential-free contact output, and automatic reset capability, it is an essential safety accessory for commercial and residential installations. Installers and system integrators can review our become a KNX dealer options.