DANFOSS BCP Series Pressure Switches

DANFOSS BCP Series Pressure Switch is a pressure control switch assembly featuring a single-pole changeover (SPDT) microswitch. The contact position changes according to the pressure at the connection port and the preset setpoint, providing reliable safety control and pressure monitoring for steam boilers and hot-water systems.

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DANFOSS BCP Series Pressure Switch (Pressure Control Switch)

Key Features

Available as high-pressure limiters, low-pressure limiters, and pressure controllers.
Wide pressure range options—from BCP1 (low pressure with a narrow differential) up to BCP7 (high pressure).
Fail-safe dual bellows design helps prevent premature shut-down in case of malfunction.
Top-mounted DIN plug for easy electrical wiring.
Single-Pole Double Throw (SPDT) switch; versions available with switch + alarm.
Can be installed directly on the pressure connection or wall-mounted using a bracket.
Available in both automatic reset and manual reset versions.
Adjustment screws accessible from the top of the housing.
Manual reset for pressure limiters can only be performed using a tool.
Safety Integrity Level: SIL 2 according to IEC 61508:2010.

Technical Data

Media		Steam, water, air
Ambient temperature		-20 – 70 °C
Media temperature
		Up to 120 °C
Enclosure		(Above 120 ˚C a water-filled loop must be installed).
		IP65
Action type acc. to EN 60730		Type BCP – 2B
		Types BCPL/BCPH – 2BDF
Electrical connection Plug		DIN 43650, Pg 11
Switch type		SPDT, snap action microswitch
Contact material		Silver/gold (gold plated silver)
Contact load	Minimum	1mA, 5V
	Maximum1)	2) AC-1: 6A, 250V
		3) AC-15: 1A, 250 V
		4) DC 13 10W, 250 V
Expected electrical lifetime		Min. 250 000 cycles under full contact load.

Dimensions

Ordering

High pressure limiters

Type	Range [bar]	Fixed Differential avg. [bar]	Reset	Max. operating pressure [bar]	Max. test pressure [bar]	Pressure connection	Code no.
Type			Reset				Code no.
BCP1H	0.1 – 1.1	0.1	Manual	6	7	G 1/2 A	017B0030
BCP2H	0.0 – 2.5	0.2	Manual	10	11	G 1/2 A	017B0034
BCP3H	0.0 – 6.0	0.4	Manual	16	18	G 1/2 A	017B0038
BCP3H	0.0 – 6.0	0.4	Manual	16	18	G 1/2 A	017B01381
BCP4H	1.0 – 10.0	0.45	Manual	25	28	G 1/2 A	017B0042
BCP5H	2.0 – 16.0	1.2	Manual	32	35	G 1/2 A	017B0046
BCP6H	5.0 – 25.0	1.5	Manual	40	45	G 1/2 A	017B0050
BCP7H	10.0 – 40.0	2.3	Manual	63	70	G 1/2 A	017B0054

Low pressure limiters

Type	Range [bar]	Fixed Differential avg. [bar]	Reset	Max. operating pressure [bar]	Max. test pressure [bar]	Pressure connection	Code no.
BCP2L	0.0 – 2.5	0.2	Manual	10	11	G 1/2 A	017B0058
BCP3L	0.0 – 6.0	0.4	Manual	16	18	G 1/2 A	017B0062
BCP4L	1.0 – 10.0	0.45	Manual	25	28	G 1/2 A	017B0066
BCP5L	2.0 – 16.0	1.2	Manual	32	35	G 1/2 A	017B0070
BCP6L	5.0 – 25.0	1.2	Manual	40	45	G 1/2 A	017B0074

Pressure controllers

Type	Range [bar]	Fixed Differential avg. [bar]	Reset	Max. operating pressure [bar]	Max. test pressure [bar]	Pressure connection	Code no.
BCP1	0.1 – 1.1	0.15 – 0.6	Auto	6	7	G 1/2 A	017B0002
BCP2	0.0 – 2.5	0.4 – 1.0	Auto	10	11	G 1/2 A	017B0006
BCP3	0.0 – 6.0	0.7 – 1.4	Auto	16	18	G 1/2 A	017B0010
BCP3	0.0 – 6.0	0.7 – 1.4	Auto	16	18	G 1/2 A	017B01101
BCP4	1.0 – 10.0	1.0 – 2.5	Auto	25	28	G 1/2 A	017B0014
BCP5	2.0 – 16.0	2.0 – 3.2	Auto	32	35	G 1/2 A	017B0018
BCP6	5.0 – 25.0	2.5 – 4.0	Auto	40	45	G 1/2 A	017B0022
BCP7	10.0 – 40.0	3.0 – 6.0	Auto	63	70	G 1/2 A	017B0026