VIOX SJ Series Cage Spring Terminal Blocks Overview

The VIOX SJ Series Cage Spring Terminal Blocks represent our flagship line of high-performance electrical connection solutions designed to meet the rigorous demands of modern industrial applications. Engineered with precision and manufactured to exacting standards, these terminal blocks combine reliability, ease of installation, and exceptional durability in a compact design that optimizes panel space while maintaining superior electrical performance.

Advanced Features and Benefits of VIOX SJ Terminal Blocks

The SJ Series cage spring terminal blocks comply with stringent international standards including IEC60947-7-1, IEC60947-7-2, GB14048-7, and GB14048-8, ensuring global compatibility and reliability. These blocks are engineered to operate in industrial environments with frequencies up to 60Hz and voltage ratings up to 800V, making them ideal for a wide range of applications.

Each VIOX SJ Terminal Block features a robust cage spring connection mechanism that provides several distinct advantages over traditional screw terminal solutions:

Vibration-Resistant Connections: The spring-loaded design maintains consistent contact pressure regardless of thermal cycling or vibration, virtually eliminating the risk of connection failure common with screw terminals.
Tool-Free Wire Installation: The innovative push-in design allows for quick installation without tools for flexible conductors with ferrules, significantly reducing assembly time.
Maintenance-Free Operation: Unlike screw connections that may loosen over time, the constant spring pressure ensures reliable long-term operation without periodic retightening.
Compact Design: The space-saving configuration allows for high-density installations with standardized mounting options for DIN rails.
Multiple Wire Connections: Designed to accommodate multiple conductors in a single connection point, enhancing wiring flexibility.

Technical Specifications and Performance Parameters

The VIOX SJ Series Terminal Blocks feature a conductor cross-section range of 1.5-35mm², accommodating a wide variety of wire gauges to meet diverse application requirements. With current ratings ranging from 17.5A to 125A depending on the model, these terminal blocks deliver exceptional performance across industrial, commercial, and infrastructure projects.

The modular design allows for easy integration with additional components such as end plates, partition plates, and marking options. Each block is color-coded for easy identification of circuit function, with standard options including gray, blue, yellow/green, orange, and red to meet international wiring standards.

Applications and Industry Solutions

VIOX SJ Terminal Blocks excel in applications requiring reliable connections in challenging environments:

Factory automation and control systems
Power distribution panels
HVAC equipment and building management systems
Transportation infrastructure (rail, aviation, marine)
Renewable energy installations (solar, wind)
Telecommunications infrastructure
Process industry control panels
Machine building and OEM equipment

Complete SJ Series Model Range

Model	Rated Voltage (V)	Rated Current (A)	Rated Cross-Section (mm²)	Rigid Wire Range (mm²)	Flexible Wire Range (mm²)	Stripping Length (mm)	Thickness (mm)	Mounting Rail	End Plate Model	Plug-in Bridge Accessories (Examples)	Marking Strips (Examples)
SJ-1.5	500V	17.5A	1.5	0.14-1.5	0.14-1.5	10	4.2	TH35-7.5, TH35-15	SJ-1.5G	UFBS 2-4, UFBS 3-4, UFBS 4-4, UFBS 5-4, UFBS 10-4	ZB4 (Blank/Printed)
SJ-2.5	800V	24A	2.5	0.2-4	0.2-2.5	10	5.2	TH35-7.5, TH35-15	SJ-2.5G	UFBS 2-5, UFBS 3-5, UFBS 4-5, UFBS 5-5, UFBS 10-5	ZB5 (Blank/Printed)
SJ-4	800V	32A	4	0.2-6	0.2-4	10	6.2	TH35-7.5, TH35-15	SJ-4G	UFBS 2-6, UFBS 3-6, UFBS 4-6, UFBS 5-6, UFBS 10-6	ZB6 (Blank/Printed)
SJ-6	800V	41A	6	0.5-10	0.5-6	12	8.2	TH35-7.5, TH35-15	SJ-6G	UFBS 2-8, UFBS 3-8, UFBS 4-8, UFBS 5-8, UFBS 10-8	ZB8 (Blank/Printed)
SJ-10	800V	57A	10	1.5-16	1.5-10	16	10.2	TH35-7.5, TH35-15	SJ-10G	UFBS 2-10, UFBS 3-10 (example), UFBS 4-10 (example), UFBS 5-10 (example), UFBS 10-10 (example)	ZB10 (Blank/Printed)
SJ-16	800V	90A	16	2.5-25	2.5-16	18	12.2	TH35-7.5, TH35-15	SJ-16G	(Refer to catalog for specific high-current bridges)	ZB10 (Blank/Printed) or larger
SJ-2.5/1×2	800V	24A	2.5	0.2-4	0.2-2.5	10	5.2	TH35-7.5, TH35-15	SJ-1x2G (example)	UFBS 2-5, UFBS 3-5, UFBS 4-5, UFBS 5-5, UFBS 10-5	ZB5 (Blank/Printed)
SJ-2.5/2×2	800V	24A	2.5	0.2-4	0.2-2.5	10	5.2	TH35-7.5, TH35-15	SJ-2x2G / SJ-2.5/2x2G	UFBS 2-5, UFBS 3-5, UFBS 4-5, UFBS 5-5, UFBS 10-5	ZB5 (Blank/Printed)
SJ-2.5JD			2.5	0.2-4	0.2-2.5	10	5.2	TH35-7.5, TH35-15	SJ-2.5G	UFBS 2-5, UFBS 3-5, UFBS 4-5, UFBS 5-5, UFBS 10-5	ZB5 (Blank/Printed)
SJ-4JD			4	0.2-6	0.2-4	10	6.2	TH35-7.5, TH35-15	SJ-4G	(Refer to UFBS 2-6 etc.)	ZB6 (Blank/Printed)
SJ-6JD			6	0.5-10	0.5-6	12	8.2	TH35-7.5, TH35-15	SJ-6G	(Refer to UFBS 2-8 etc.)	ZB8 (Blank/Printed)
SJ-10JD			10	0.5-16 (Typo in doc as 0.5-10 for rigid, using SJ-10 data)	0.5-10 (Typo in doc as 0.5-10 for flex, using SJ-10 data)	16 (Using SJ-10 data)	10.2	TH35-7.5, TH35-15	SJ-10G	(Refer to UFBS 2-10 etc.)	ZB10 (Blank/Printed)
SJ-16JD			16	2.5-25	2.5-16	18 (Typo in doc as 12, using SJ-16 data)	12.2	TH35-7.5, TH35-15	SJ-16G	(Refer to high-current bridges)	ZB10 (Blank/Printed) or larger

Accessories and System Components

VIOX offers a comprehensive range of accessories to complement the SJ Series Terminal Blocks:

Jumpers (UFBS Series): Available in various pole configurations (2-5, 3-5, 4-5, 5-5, 10-5, 10-4) to facilitate quick and reliable circuit bridging
End Covers: Specifically designed end plates to provide insulation and protection for terminal groups
Marking Systems: Compatible with industry-standard marking tools and labels for clear circuit identification
Mounting Accessories: DIN rail mounting components for secure installation

Quality Assurance and Certification

As a leading manufacturer of low-voltage electrical components, VIOX Electric maintains rigorous quality control standards throughout the production process. All SJ Series Terminal Blocks undergo extensive testing to ensure compliance with international safety standards and performance requirements. Our commitment to quality is reflected in our comprehensive warranty and dedicated technical support.

Why Choose VIOX SJ Terminal Blocks?

When selecting terminal blocks for critical electrical connections, the VIOX SJ Series offers unmatched reliability, installation efficiency, and long-term performance. Our cage spring technology eliminates the maintenance concerns associated with traditional screw terminals while providing superior vibration resistance and connection stability.

With global certification and compatibility with major control systems, VIOX SJ Terminal Blocks represent the optimal choice for demanding industrial applications where connection failure is not an option.

Contact our technical sales team today to discuss how VIOX SJ Terminal Blocks can enhance the reliability and efficiency of your electrical systems.

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