Phoenix Contact TB 2,5 B I RD Feed-through Terminal Block

Technical Overview

High-performance feed-through terminal block with 800 V nominal voltage, 24 A current, and 0.5-4 mm² conductor cross-section via M2.5 screw connection.

Key Features

Screw connection terminal block
Nominal voltage 800 V
Nominal current 24 A
Conductor cross-section 0.5 mm² - 4 mm² (rigid)
Conductor cross-section 0.5 mm² - 2.5 mm² (flexible)
Rated surge voltage 8 kV
Insulating material PA with UL 94 V0 flammability rating
Wide operating temperature range: -60 °C to 110 °C
Multiple mounting types: NS 35/7,5, NS 35/15, NS 32
cULus Recognized with 600 V, 20 A, 20-12 AWG ratings

Technical Specification Matrix

Parameter	Value
Product type	Feed-through terminal block
Number of connections	2
Number of rows	1
Potentials	1
Overvoltage category	III
Degree of pollution	3
Rated surge voltage	8 kV
Number of connections per level	2
Nominal cross section	2.5 mm²
Rated cross section AWG	12
Connection method	Screw connection
Screw thread	M2,5
Note	Terminal point
Tightening torque	0.4 ... 0.5 Nm
Stripping length	7 mm
Internal cylindrical gage	A3
Connection in acc. with standard	IEC 6047-7-1
Conductor cross-section rigid	0.5 mm² ... 4 mm²
Cross section AWG	20 ... 12 (converted acc. to IEC)
Conductor cross-section flexible	0.5 mm² ... 2.5 mm²
Conductor cross-section, flexible [AWG]	20 ... 14 (converted acc. to IEC)
Conductor cross-section flexible (ferrule without plastic sleeve)	0.5 mm² ... 2.5 mm²
Flexible conductor cross-section (ferrule with plastic sleeve)	0.5 mm² ... 1 mm²
Nominal current	24 A
Maximum load current	24 A (at 2.5 mm²)
Nominal voltage	800 V
Color	red
Flammability rating according to UL 94	V0
Insulating material group	I
Insulating material	PA
Open side panel	Yes
Ambient temperature (operation)	-60 °C ... 110 °C
Ambient temperature (storage/transport)	-25 °C ... 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Ambient temperature (assembly)	-5 °C ... 70 °C
Ambient temperature (actuation)	-5 °C ... 70 °C
Permissible humidity (operation)	20% ... 90%
Permissible humidity (storage/transport)	30% ... 70%
Mounting type	NS 35/7,5, NS 35/15, NS 32
cULus Recognized Nominal voltage UN (B/C)	600 V
cULus Recognized Nominal current IN (B/C)	20 A
cULus Recognized Cross section AWG (B/C)	20 - 12
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	0 x 0.62 x 0

Industrial Applications

1. High-Voltage Control Panel Wiring

This terminal block is ideal for organizing and terminating wiring within industrial control panels, especially those operating at higher voltages. Its 800 V nominal voltage and ability to handle 0.5-4 mm² conductors ensure secure and compliant connections for various control circuits, motor starters, and power distribution within the panel.

Problem Solved

Safely and reliably connects multiple wires in high-voltage industrial control systems, preventing electrical shorts and ensuring organized wiring.

Control panelhigh voltagewire terminationindustrial automationDIN rail mountingscrew connection

2. HVAC System Electrical Distribution

The TB 2,5 B I RD is suitable for connecting power and control wiring in heating, ventilation, and air conditioning (HVAC) systems. Its wide operating temperature range (-60 °C to 110 °C) allows it to function reliably in diverse environmental conditions often encountered in HVAC installations, while the 24 A current rating supports various motor and fan loads.

Problem Solved

Provides robust, temperature-resilient electrical connections for HVAC units, ensuring consistent power delivery and control signal integrity despite temperature fluctuations.

HVACpower distributiontemperature resistanceclimate controlbuilding automationelectrical connections

3. Machine Tool Interfacing and Power Feeds

In machine tool applications, this terminal block can facilitate secure electrical interfacing for sensors, actuators, and power feeds. Its M2.5 screw connection offers vibration-resistant termination, crucial for machinery subject to mechanical stress, while its compact 6.2 mm width helps conserve space in tight machine enclosures.

Problem Solved

Ensures reliable and vibration-resistant electrical connections for critical machine tool components, maintaining operational integrity and safety during high-stress operations.

Machine toolsautomationsensor wiringactuator connectionsvibration resistancecompact design