Phoenix Contact UT 6-HESI (6,3X32) Fuse Terminal Block

Technical Overview

Lever-type fuse terminal block with Reakdyn screw connection, rated 630V/10A for 6.3x32mm G fuses. Supports 24-8 AWG, operates -60°C to 110°C.

Key Features

2-position, 1-level fused terminal block
Compatible with 6.3 x 32 mm G fuse inserts (glass or ceramic)
Screw connection method for reliable wiring
Maintenance-free conductor connections with Reakdyn principle for vibration resistance
Simple potential distribution capability
Test connection points on both sides within the safety lever
Extremely compact design for space-saving installations
UL 94 V-0 flammability rating for enhanced safety
DIN rail mountable on NS 35/7.5 and NS 35/15 rails

Technical Specification Matrix

Parameter	Value
Type	Fuse Terminal Block
Number of Positions	2
Current Rating	10 A
Voltage Rating	630 V
Connection Method	Screw
Color	Black (RAL 9005)
Housing Material	Polyamide (PA)
Flammability Rating	UL 94 V-0
Mounting Style	DIN Rail (NS 35/7.5, NS 35/15)
Wire Gauge Range	24 AWG to 8 AWG
Conductor Cross-section (flexible)	0.2 mm² to 10 mm²
Fuse Size Held	6.3 mm x 32 mm (Type G, Glass/Ceramic)
Minimum Operating Temperature	-60 °C
Maximum Operating Temperature	+110 °C (Operating temperature range incl. self-heating)
Height on NS 35/7,5 DIN rail	75.6 mm
Height on NS 35/15 DIN rail	83.1 mm
Physical Weight (kg)	0.02
Dimensions L x W x H (cm)	5.78 x 0.82 x 7.56

Industrial Applications

1. Fused Power Distribution in High-Vibration Industrial Control Panels

This fuse terminal block is ideal for protecting individual control circuits (e.g., motor starters, solenoids) within industrial machinery control panels. Its 630V/10A rating suits typical industrial control voltages and currents, while the integrated 6.3x32mm fuse holder provides crucial overcurrent protection.

Problem Solved

Ensures reliable overcurrent protection for critical machine safety circuits, preventing cascading failures. The Reakdyn screw connection resists vibrations common in industrial environments, maintaining secure electrical connections.

Overcurrent protectionindustrial controlmachine safetyvibration resistanceDIN rail mountingfuse circuit

2. Fused Branch Circuit Protection for Commercial HVAC Systems

The UT 6-HESI (6,3X32) can be used for fused branch circuit protection in commercial or industrial HVAC systems, connecting power to fan motors, pumps, and control circuits. Its wide operating temperature range (-60°C to 110°C) allows for deployment in diverse climatic conditions, from cold utility rooms to warmer rooftop units.

Problem Solved

Provides individual circuit fusing for components in HVAC systems, allowing for quick fault isolation and maintenance without shutting down the entire system. The robust screw connection ensures durability in varying ambient temperatures and potential vibrations from compressors or fans.

HVAC systemsbranch circuit protectionfusehigh/low temperaturescrew connectionelectrical distribution

3. Reliable Fused Connections for Railway Signaling and Communication Systems

Given its proven suitability for railway applications and excellent vibration resistance (Reakdyn principle), this terminal block is well-suited for fused power distribution within trackside signaling or communication cabinets. The -60°C to 110°C temperature range accommodates extreme outdoor conditions.

Problem Solved

Guarantees stable and protected electrical connections in harsh railway environments subject to significant vibration, temperature fluctuations, and the need for high reliability in safety-critical signaling. Individual fuse protection simplifies fault diagnosis in complex systems.

Railway applicationssignaling systemscommunication infrastructureharsh environmentvibrationfault protectionwide temperature range