Name: Phoenix Contact STTB 2,5 Double-level Spring-cage Terminal Block - INOSAKI
SKU: Phoenix-3031270
Price: 4.23 USD
Availability: InStock

Technical Overview

Double-level spring-cage terminal block rated 500V/22A, -60°C to 110°C. Features compact design, vibration resistance, and ATEX/IECEx certification.

Key Features

One-handed wiring enabled by spring-cage connection; no screwdriver required.
Accepts very small flexible conductors down to 0.08 mm² without cross-section restriction using ferrules.
Reliable vibration resistance provided by spring-loaded contact elements.
Compatible with the CLIPLINE complete range of standardized bridging, marking, and testing accessories.
ATEX/IECEx certified for use in hazardous areas (II 2 GD Ex eb IIC Gb).
Compact design for maximum space savings.
Tested for railway applications.

Technical Specification Matrix

Parameter	Value
Nominal Voltage	500 V
Nominal Current	22 A
Maximum Load Current	26 A (with 4 mm² conductor)
Rated Surge Voltage	6 kV
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)
Connection Method	Spring-cage connection
Stripping Length	8 mm - 10 mm
Mounting Type	DIN rail NS 35/7.5, NS 35/15
Color	Gray (RAL 7042)
Insulating Material	PA
Flammability Rating	UL 94 V0
Operating Temperature Range	-60°C to 110°C
Overvoltage Category	III
Degree of Pollution	3
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	4.75 x 0.52 x 6.75

Industrial Applications

1. Space-Constrained Control Panel Wiring in Hazardous Locations

This terminal block is ideal for consolidating control and power signals in industrial control panels where space is at a premium and explosive atmospheres are present, such as in chemical processing plants or oil and gas facilities.

Problem Solved

Effectively routes two independent circuits within a single compact unit, minimizing panel footprint while meeting safety regulations for hazardous environments (ATEX/IECEx II 2 GD Ex eb IIC Gb).

ATEX/IECExHazardous AreaSpace SavingDouble-levelControl Panel Wiring500V22A

2. Railway Rolling Stock Power and Signal Distribution

Suited for reliable power and signal distribution within railway vehicles and infrastructure, enduring harsh environmental conditions and vibrations. Its compliance with railway application standards ensures long-term operational integrity.

Problem Solved

Provides robust, vibration-resistant electrical connections in dynamic railway environments, capable of operating across a wide temperature range (-60°C to 110°C) and handling diverse conductor sizes, crucial for consistent performance.

Railway ApplicationsVibration ResistanceWide Temperature RangeDIN Rail Mounting500VSignal DistributionPower Distribution

3. High-Density Signal Wiring in Industrial Machinery

Perfect for complex industrial machinery requiring high-density signal integration. The tool-free spring-cage connection ensures rapid and secure wiring during manufacturing and maintenance of intricate systems.

Problem Solved

Facilitates high-density wiring by combining two circuits in one block, optimizing space within machine enclosures. The quick and reliable spring-cage technology reduces installation time and improves connection integrity for sensitive control signals and power up to 22A.

High-Density WiringIndustrial MachinerySpring-cage ConnectionCompact Design0.08-4mm² ConductorTool-free Wiring