ABB RDCO-04C_Xiamen XingRuiJia Import and Export CO,LTD

Model：ABB RDCO-04C

Brand: ABB 2025-08-28
Price range (USD): 2000-4000
Country: Sweden
Parameter: Model: RDCO-04C
Brand: ABB (Originally part of the Busch-Jaeger portfolio, now under ABB)
Type: Electromechanical, single-pole switch
Electrical Switching: SPDT (Single Pole, Double Throw)
• 1 x Changeover Contact (NO/NC)
Electrical Rating (Switch): 250 VAC, 16(6)A 24 VDC, 16(6)A

ABB RDCO-04C

Overview

The ABB RDCO-04C is a compact, electromechanical differential pressure switch designed primarily for monitoring filter status in HVAC (Heating, Ventilation, and Air Conditioning) systems. It detects the pressure drop across air filters, fans, or other equipment and triggers an electrical switch when a pre-set differential pressure (ΔP) value is reached.

Key Technical Parameters

Parameter	Value / Description
Model	RDCO-04C
Brand	ABB (Originally part of the Busch-Jaeger portfolio, now under ABB)
Type	Electromechanical, single-pole switch
Electrical Switching	SPDT (Single Pole, Double Throw) • 1 x Changeover Contact (NO/NC)
Electrical Rating (Switch)	250 VAC, 16(6)A 24 VDC, 16(6)A Note: The (6)A indicates the resistive current rating for the NC contact.
Setting Range (Differential Pressure)	20 ... 400 Pa (Pascals) (Approx. 0.008 to 0.16 inches of water column)
Maximum Static Pressure	2000 Pa (~ 8 inches of water column)
Connection Ports	Two plastic pressure nipples for ½" internal diameter tubing
Housing Material	Plastic (PC/ABS)
Diaphragm Material	EPDM Rubber
Mounting	Snap-on mounting on a standard 35 mm DIN rail
Protection Rating	IP20 (for the terminal compartment)
Ambient Operating Temperature	-5 °C to +60 °C
Storage Temperature	-25 °C to +70 °C
Weight	Approximately 0.1 kg

Function and Adjustment

Operation: The switch has an internal diaphragm that moves based on the difference in pressure between the two connection ports (High pressure vs. Low pressure). This mechanical movement actuates the micro-switch.

Setting/Calibration: The setpoint (the pressure at which the switch activates) is easily adjusted using a rotating dial on the front of the unit. The dial has a scale from 1 to 10, which corresponds to the 20-400 Pa range. A setting of "1" is ~20 Pa, and "10" is ~400 Pa.

Electrical Connections: The device has screw terminals for:

Common (C)
Normally Open (NO)
Normally Closed (NC)

Status Indication: A red visual indicator shows the switching status.

Typical Applications

The primary application for the RDCO-04C is:

Filter Monitoring: Detecting when air filters in HVAC systems become clogged and need replacement. The "High Pressure" port is connected to the dirty side of the filter, and the "Low Pressure" port to the clean side. When the ΔP exceeds the setpoint, the switch can trigger an alarm or indicator light.

Fan Monitoring: Checking the operational status of fans by measuring the pressure difference they create.

Airflow proving: Ensuring adequate airflow in a duct.

Inventory//Affordable prices//Excellent quality//Imported with original packaging

ABB 5SHY4045L0006 3BHB030310R0001

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ABB 5SHY3545L0009 3BHB013085R0001 3BHE009681R0101 GVC750BE101

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ABB 5SHY35L4503 3BHB004693R0001 3BHB004692R0002 5SXE01-0127

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