Intrinsic safety barriers BIZoN 2Ex.24.24


BIZoN 2Ex.24.24 is a two-channel intrinsic safety barrier with an automatic recovery function after tripping. Reverse polarity protection provides intrinsic safety for transducers and equipment installed in hazardous areas.

Every channel can be used for connecting one device with an interface: current loop (0-5 мА / 0-20 µА / 4-20 µА), dry contact (DC), digital input (DI), Digital output (DO) or for supply one device installed in a hazardous area voltage + 24V DC (connections are made in a two-wire circuit).

Note: When an intrinsic safety barrier using with devices from the equipment group IIB, the connection can be complete with a two-wire or three-wire circuit.

The intrinsic safety barrier meets the requirements of EN 60079-0:2019 and EN 60079-11:2017 and has explosion protective markings EX II (1) G [Ex ia Ga] IIC (designed for installation outside hazardous areas).

Intrinsic safety barrier - is the device that limits the energy supplied to a circuit and protects hazardous areas from excess energy. By limiting energy to a safe level, intrinsically safe circuits prevent the ignition of potentially explosive atmospheres.


The device is used in measurement and process control systems, emergency protection and alarm systems in explosive and/or hazardous areas of oil and gas & petrochemical, metallurgy, power, chemical, food and other industries, where explosive gas mixtures, vapors, other flammable and explosive substances (dust, powder) may be present.

Intrinsic Safety Barriers for mining industry (oil and gas)
IS Barriers for processing industrу enterprises
Intrinsic Safety Barriers for oil and gas industry, for safe keeping of flammable products
Intrinsic safety, spark protection barriers for use in a transport industry
Intrinsic safety barriers for use in a chemical and petrochemical industries
Intrinsic Safety Barriers for use with mining equipment
Intrinsic Safety Barriers for use in power & energy industries


Intrinsic safety barrier BIZoN 2Ex.24.24 meets the requirements:

Technical data


Channel «1-2»
Contact 2,3
Group IIC
Channel «1-2»
Contact 2,3
Group IIB
Channel «1-2»
Contact 1,2,3
Group IIB
Max. external capacitance Co 0.07 uF 0,35 uF 0,35 uF
Max. external inductance Io 1 mH 4 mH 1,2 mH
Max. output current Io 93 mА 93 mА 185 mА
Channels count 2
Max supply voltage 25 V
Max supply current 30 mА
Channel resistance 360 Оhm
Max. output voltage Uo 28 V
Explosion-proof marking Ex II (1) G [Ex ia Ga] IIB
Conformance EN 60079-0:201б, EN 60079- 11:2017
Degree of protection IP20
Ambient temperature (operation) -20...+60 °С
Relative humidity (operation) < 80 % (non-condensing)
Assembly instructions 35 mm DIN rail mounting
Dimensions 111 х 99 х 17.6 mm
Net weight 100g
Connection data Phoenix Contact; screw connection; conductor cross section: 0.2-2.5 mm2



Delivery set (typical)

# Name pcs.
1 IS Barrier BIZoN 2Ex.24.24 1
2 Passport 1
3 User Manual 1