Name: Phoenix Contact ST 2,5 Feed-Through Terminal Block - INOSAKI
SKU: Phoenix-3031212
Price: 1.49 USD
Availability: InStock

Technical Overview

800V, 24A feed-through terminal block with spring-cage connection. Supports 0.08-4mm² conductors. UL 94 V0 rated, -60°C to 110°C operation.

Key Features

DIN rail mounting compatible with NS 35/7,5 and NS 35/15.
Compact design with front connection enables user-friendly wiring in limited spaces.
Large wiring space accommodates conductors with ferrules and plastic collars.
Consistent double function shaft offers opportunities for time-saving potential distribution and test accessories.
Rated for 800 V nominal voltage and 24 A nominal current (at 2.5 mm²).
Wide operating temperature range from -60 °C to 110 °C.
Tested and suitable for railway applications.
Insulating material is PA (Polyamide) with a UL 94 V0 flammability rating.

Technical Specification Matrix

Parameter	Value
Product Type	Feed-through terminal block
Nominal Voltage	800 V
Nominal Current	24 A (at 2.5 mm²)
Maximum Load Current	31 A (with 4 mm² conductor cross-section)
Rated Surge Voltage	8 kV
Number of Connections	2
Number of Positions	1
Connection Method	Spring-cage connection
Nominal Cross Section	2.5 mm²
Conductor Cross-section Rigid	0.08 mm² - 4 mm² (AWG 28 - 12)
Conductor Cross-section Flexible	0.08 mm² - 2.5 mm² (AWG 28 - 14)
Stripping Length	8 mm - 10 mm
Mounting Type	DIN rail (NS 35/7,5, NS 35/15)
Color	Gray (RAL 7042)
Insulating Material	PA (Polyamide)
Flammability Rating (UL 94)	V0
Ambient Temperature (Operation)	-60 °C to 110 °C
Degree of Pollution	3
Overvoltage Category	III
Insulating Material Group	I
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	4.4 x 0.52 x 4.85

Industrial Applications

1. Industrial Control Panels in Harsh Environments

This terminal block is ideal for connecting power and control circuits within industrial control panels situated in demanding environmental conditions.

Problem Solved

Provides reliable, vibration-resistant electrical connections in control panels exposed to extreme temperatures (-60 °C to 110 °C) and potential mechanical stress, ensuring continuous operation. Its high voltage (800V) and current (24A) ratings safely handle typical industrial loads.

Industrial ControlHarsh EnvironmentVibration ResistanceHigh VoltageWide Temperature Range

2. Railway Signalling and Rolling Stock Wiring

Suitable for interconnecting electrical systems in railway infrastructure, including signalling equipment and wiring within train carriages and locomotives.

Problem Solved

Addresses the need for robust and reliable electrical connections in railway applications, which are subject to severe vibrations, shocks, and wide temperature fluctuations, as it is explicitly tested for railway standards (DIN EN 50155 compliant).

Railway ApplicationsRolling StockVibration & Shock ResistanceDIN EN 50155Signal Integrity

3. Process Industry Control in Hazardous Areas (Ex-Area)

Used for connecting instrumentation and control wiring in chemical, petrochemical, or pharmaceutical plants where potentially explosive atmospheres exist.

Problem Solved

Offers a secure and gas-tight spring-cage connection suitable for Zone 1 and Zone 2 hazardous areas, minimizing the risk of ignition. Its Ex-certification (II 2 GD Ex eb IIC Gb) and specified operating temperature range for Ex areas (-60 °C to 85 °C) ensure compliance with safety regulations for explosive environments.

Hazardous AreaExplosive AtmosphereEx-certificationProcess ControlGas-tight Connection