Terminal Blocks - Accessories

Terminal Blocks - Accessories - Jumpers

Part Number	Description / PDF	Quantity
CA742/2 Altech Corporation	JUMPER TERM BLK 2POS ROUND PINS	1100
CA514/13-4 Altech Corporation	JUMPER TERM BLK 4POS SPADE	100
CA627/3 Altech Corporation	JUMPER TERM BLK 3POS ROUND PINS	100
CA801/A4 Altech Corporation	JUMPER TERM BLK 4POS FLAT PIN	100
CA710/2 Altech Corporation	JUMPER TERM BLK 2POS FLAT PIN	200
CA728/2 Altech Corporation	JUMPER TERM BLK 2POS ROUND PINS	50
CA729/10 Altech Corporation	JUMPER TERM BLK 10POS ROUND PIN	450
CA751/4 Altech Corporation	JUMPER TERM BLK 4POS ROUND PINS	100
CA743/3 Altech Corporation	JUMPER TERM BLK 3POS ROUND PINS	900
CA728/4 Altech Corporation	JUMPER TERM BLK 4POS ROUND PINS	50
CA623/4 Altech Corporation	JUMPER TERM BLK 4POS ROUND PINS	0
CA717/4 Altech Corporation	JUMPER TERM BLK 4POS FLAT PIN	800
CA724/3 Altech Corporation	JUMPER TERM BLK 3POS ROUND PINS	0
CA718/10 Altech Corporation	JUMPER TERM BLK 10POS FLAT PIN	40
CA749/4 Altech Corporation	JUMPER TERM BLK 4POS ROUND PINS	0
JX6/4 Altech Corporation	JUMPER CX6 4P	50
CA749/10 Altech Corporation	JUMPER TERM BLK 10POS ROUND PIN	60
RSJ-BK Altech Corporation	JUMPER FOR RSM BLK 20POSITION	200

Terminal Blocks - Accessories - Jumpers

1. Overview

Terminal block jumpers are conductive components used to establish electrical connections between adjacent terminals in terminal blocks. They serve as critical accessories in electrical systems, enabling circuit continuity, signal routing, and power distribution. With the increasing complexity of industrial automation and electrical systems, jumpers play a vital role in optimizing wiring efficiency, reducing installation time, and enhancing system reliability.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Shorting Jumpers	Low-resistance copper/aluminum bridges for permanent connections	Current transformer circuits, power distribution panels
Bridge Jumpers	Modular design with multiple contact points	PLC control systems, relay panels
Removable Jumpers	Tool-free insertion/removal for maintenance flexibility	Test equipment, temporary wiring systems
Insulated Jumpers	Encapsulated design with protective housing	High-voltage switchgear, hazardous environments
Marking Jumpers	Integrated labeling for circuit identification	Control cabinets, industrial machinery

3. Structure and Composition

Typical jumper assemblies consist of: 1) Conductive elements (copper alloys, tin-plated surfaces) 2) Insulation housing (PA66, UL94-V0 rated thermoplastics) 3) Contact springs (phosphor bronze with gold plating) 4) Mechanical locking features (snap-in or screw-fixed) 5) Optional marking inserts. The design ensures vibration resistance (up to 15G), IP20 protection rating, and compliance with IEC 60947 standards.

4. Key Technical Specifications

Parameter	Typical Range	Importance
Rated Voltage	250V-1000V AC/DC	Determines insulation requirements
Current Capacity	10A-200A	Dictates conductor cross-section
Contact Resistance	<10m	Impacts thermal performance
Operating Temp.	-40 C to +120 C	Affects material selection
Short Circuit Withstand	10kA-50kA	Safety and system protection

5. Application Fields

Key industries include: - Industrial Automation (PLC cabinets, robotics) - Energy Systems (solar inverters, wind turbines) - Transportation (railway control systems, EV charging) - Building Infrastructure (HVAC systems, smart grids) - Test & Measurement (laboratory equipment, diagnostic tools)

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
Phoenix Contact	FK-U/ jumper series	Modular bridge design, 17.5mm pitch
Weidm ller	SAM series	Tool-free operation, color-coded variants
TE Connectivity	CHC jumpers	High vibration resistance, automotive grade
Wago	287-series	CAGE CLAMP technology, 35mm DIN rail
Omron	V-terminal jumpers	UL/CSA certified, 50A rating

7. Selection Recommendations

Key considerations: 1) Electrical requirements (current/voltage matching) 2) Environmental conditions (temperature, corrosion) 3) Installation method (DIN rail, panel mount) 4) Maintenance needs (removable vs. fixed) 5) Compatibility with terminal block pitch (2.5mm to 100mm)

8. Industry Trends

Current development trends include: - Miniaturization (sub-2.5mm pitch jumpers) - Smart integration (IoT-enabled monitoring jumpers) - Material innovation (graphene-enhanced conductors) - Modular systems (tool-less reconfiguration) - Sustainability (halogen-free materials, RoHS compliance)