Name: Phoenix Contact TB 4 I Feed-through Terminal Block - INOSAKI
SKU: Phoenix-3246324
Price: 5.97 USD
Availability: InStock

Technical Overview

800V, 32A feed-through terminal block with screw connection. Supports 0.5-6mm² conductors. Operates from -60°C to 110°C. Features 8kV surge protection.

Key Features

Screw connection for secure and reliable wiring
Rated for 800 V nominal voltage and 32 A nominal current
Accommodates conductor cross sections from 0.5 mm² to 6 mm² (AWG 20-10)
Wide operating temperature range from -60 °C to 110 °C
High rated surge voltage of 8 kV ensures protection against transients
Designed for mounting on NS 35/7,5, NS 35/15, or NS 32 DIN rails
Flammability rating according to UL 94 V0 for enhanced safety
Constructed with durable PA (Polyamide) insulating material

Technical Specification Matrix

Parameter	Value
Product Type	Feed-through terminal block
Number of Levels	1
Number of Connections	2
Potentials	1
Nominal Cross Section	4 mm²
Color	Traffic gray B (RAL 7043)
Insulating Material	PA (Polyamide)
Flammability Rating (UL 94)	V0
Rated Surge Voltage	8 kV
Degree of Pollution	3
Overvoltage Category	III
Insulating Material Group	I
Nominal Current	32 A
Maximum Load Current	32 A (with 4 mm² conductor cross-section)
Nominal Voltage	800 V
Connection Method	Screw connection
Screw Thread	M3
Stripping Length	8 mm
Tightening Torque	0.5 ... 0.6 Nm
Conductor Cross Section Solid (min)	0.5 mm²
Conductor Cross Section Solid (max)	6 mm²
Conductor Cross Section AWG (min)	20
Conductor Cross Section AWG (max)	10
Conductor Cross Section Flexible (min)	0.5 mm²
Operating Temperature Range	-60 °C ... 110 °C
Relative Insulation Material Temperature Index (Elec., UL 746 B)	130 °C
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	4.25 x 0.62 x 4.25

Industrial Applications

1. Industrial Control Panel Power Distribution

This terminal block is ideal for distributing 800V, 32A power within industrial control panels, connecting main power lines to various sub-circuits or devices. Its compact width of 6.2mm allows for high-density wiring in space-constrained enclosures.

Problem Solved

Provides a safe, reliable, and high-capacity screw connection point for power conductors in industrial environments, ensuring stable power delivery and preventing accidental disconnections or short circuits due to its V0 flammability rating and 8kV surge protection.

Power distributionControl panel800V32AScrew connectionHigh densitySurge protectionUL 94 V0

2. HVAC System Motor and Actuator Wiring

Suitable for connecting power to motors, actuators, and other components in large HVAC systems, especially where equipment operates across a wide temperature spectrum. The -60°C to 110°C operating temperature range ensures reliability in harsh outdoor or indoor environments.

Problem Solved

Offers a robust and temperature-resistant connection solution for critical components in HVAC units, handling significant voltage (800V) and current (32A) without degradation, even in extreme cold or heat, thereby ensuring operational continuity.

HVACMotor wiringActuator connectionHigh temperatureLow temperature800V32ATemperature resistance

3. Renewable Energy DC Power Junctions

Can be used in solar inverter junction boxes or other renewable energy setups to terminate and connect DC power lines from solar panels or other sources to inverters, handling the voltage and current requirements typical in such systems.

Problem Solved

Provides a secure and durable electrical connection point in demanding outdoor or semi-outdoor renewable energy installations. Its 800V nominal voltage and 32A current rating are well-suited for DC power circuits, and the robust screw connection resists vibration and thermal cycling, enhancing system longevity.

Solar energyInverter connectionDC powerJunction box800V32AScrew terminalOutdoor applications