Name: Phoenix Contact PT 4-EX(I)-BE Surge Protection Base Element - INOSAKI
SKU: Phoenix-2839486
Price: 110.00 USD
Availability: InStock

Technical Overview

Base element for 24 V DC EEx ia surge protection in MCR signal circuits. Mounts on DIN rail, 17.7 mm width, operates -40°C to 80°C.

Key Features

Maximum ease of maintenance due to a 2-piece design.
Easy selection for all demands in MCR applications with a comprehensive product portfolio.
Signal is not influenced during maintenance work due to impedance-neutral insertion and removal of protective plugs.
Suitable for mounting on NS 35/7.5 and NS 35/15 DIN rails.
Designed for 4-core floating EEx ia signal circuits.
Protects sensitive electronics against transient overvoltages.

Technical Specification Matrix

Parameter	Value
Product Type	Base element
Product Family	PLUGTRAB PT
Type	Base element, DIN rail mounting
Number of Positions	4
Wire Pairs Per Module	2
Nominal Voltage UN	24 V DC
Max. Input Voltage Ui	30 V DC
Max. Input Current Ii (T4 / ≤ 80°C)	500 mA
Max. Input Current Ii (T5 / ≤ 55 °C)	500 mA
Max. Input Current Ii (T6 / ≤ 40 °C)	500 mA
Maximum Inner Capacitance Ci	1.1 nF
Max. Internal Inductance Li	1 µH
Max. Input Power Pi (T4 / ≤ 80°C)	850.00 mW
Max. Input Power Pi (T5 / ≤ 55 °C)	700.00 mW
Max. Input Power Pi (T6 / ≤ 40 °C)	700.00 mW
Ambient Temperature (Operation T4)	-40 °C ... 80 °C
Ambient Temperature (Operation T5)	-40 °C ... 55 °C
Ambient Temperature (Operation T6)	-40 °C ... 40 °C
Overvoltage Category	III
Pollution Degree	2
Connection Method	Screw connection
Screw Thread	M3
Tightening Torque	0.5 Nm
Conductor Cross-section Flexible	0.2 mm² ... 2.5 mm²
Conductor Cross-section Rigid	0.2 mm² ... 4 mm²
Conductor Cross-section AWG	24 ... 12
Approvals	DNV GL, ATEX, IECEx, INMETRO, UKCA-EX, CCC
Physical Weight (kg)	0.06
Dimensions L x W x H (cm)	5.15 x 1.77 x 9

Industrial Applications

1. Hazardous Area Process Control

Protects intrinsically safe (EEx ia) 24 V DC Measurement, Control, and Regulation (MCR) signal circuits in environments with potentially explosive atmospheres, such as oil & gas facilities or chemical processing plants.

Problem Solved

Prevents dangerous overvoltages from damaging sensitive MCR equipment and igniting explosive atmospheres, ensuring operational safety and data integrity in hazardous areas due to EEx ia circuit protection and ATEX/IECEx approvals.

EEx iaintrinsic safetysurge protection24V DChazardous areaATEXIECExMCR signalsprocess control

2. Water and Wastewater Treatment Signal Protection

Safeguards 24 V DC signal lines from external transient overvoltages common in outdoor pumping stations and distributed control panels found in water and wastewater treatment facilities.

Problem Solved

Protects critical control and measurement systems (e.g., level sensors, flow meters) from damage caused by lightning strikes and switching surges, which are prevalent in widespread outdoor industrial installations. The wide operating temperature range of -40°C to 80°C ensures reliable performance under varying environmental conditions.

24V DCsurge protectionMCR technologyoutdoor installationtransient overvoltagewater treatmentwastewater-40°C to 80°C

3. Industrial Control Cabinet Automation

Integrates reliable surge protection for 24 V DC control signals within industrial control cabinets, providing safeguarding for automation components mounted on DIN rails.

Problem Solved

Shields programmable logic controllers (PLCs), remote I/O modules, and other sensitive control components from electrical noise and transient overvoltages caused by motor starts, inductive loads, or grid disturbances, thereby enhancing system reliability and uptime in industrial automation settings. The DIN rail mounting simplifies installation and system integration.

24V DCcontrol cabinetsDIN rail mountingindustrial automationPLCMCR signalselectrical noisetransient protection