SPECIFICATIONS

5PCS/LOT TB Series Heavy-Duty Screw Terminal Barrier Block Strips (15A / 25A / 45A Dual Row Wire Connectors)

Streamline your electrical control panels, industrial machinery, and home power distribution setups with our premium TB Series Screw Terminal Barrier Block Matrix. Sold as a highly cost-effective 5PCS/LOT wholesale package, these heavy-duty dual-row terminal rows effortlessly handle continuous structural current loads up to 15A, 25A, or 45A. Every block features a solid, high-safety insulating base integrated with high-conductivity copper alloy terminal plates and heavy-torque binding steel screws. The entire terminal sequence is topped with a crystal-clear, removable Flame-Retardant PC Protective Cover that allows instant visual inspection of wire placements while offering robust physical defense against accidental short-circuits, flying dust, and live human contact.

### Outstanding Product Features:

• Value-Packed 5PCS Bulk Pack: Shipped in a convenient 5-piece lot to ensure you have matching, high-performance wire connectors ready for large-scale control cabinet assembly or multi-site electrical projects.

• High-Conductivity Copper Matrix: Features thickened zinc-plated copper alloy connector plates that minimize circuit contact resistance, maximize structural conductivity, and prevent high-temperature galvanic corrosion.

• Flame-Retardant High-Safety Base: The solid structural backing chassis is injection-molded from premium engineering polymer, ensuring exceptional mechanical impact strength and excellent thermal insulation under constant electrical loads.

• Clear Anti-Shock Protection Shield: Accompanied by a transparent, flip-up polycarbonate face cover that snaps firmly onto the terminal block shoulders, preserving complete wiring visibility while mitigating electrical arc flashing risks.

• Heavy-Torque Screw Binding System: Outfitted with high-tensile steel screws that bite firmly down onto bare wire strands, fork terminals, or ring lugs, delivering a tight, vibration-proof connection that will not loosen over time.

### Technical Specifications:

• Product Component Line: Industrial Dual-Row Screw Terminal Barrier Strip Kit

• Wholesale Packing Matrix: 5 Pieces per Lot (5PCS/LOT)

• Model Configurations: TB-1503 to TB-1512 (15A) | TB-2503 to TB-2512 (25A) | TB-4503 to TB-4512 (45A) Series

• Position Layout Arrays: 3, 4, 5, 6, 8, 10, or 12 Screws Positions (Dual-Row Terminals)

• Maximum Rated Continuous Load: 15 Amperes / 25 Amperes / 45 Amperes

• Maximum Allowed Operating Voltage: 600V AC / DC Max Continuous Workload

• Primary Shell Material Base: High-Density Flame-Retardant Engineering Polymer

• Transparent Cover Composition: Ultra-Tough Polycarbonate (PC Cover)

• Metal Terminal Hardware Base: Pure Copper Alloy Plate with High-Tensile Steel Locking Screws

• Primary Application Profiles: Industrial Automation Panels, Power Distribution Cabinets, Marine Splicing Hubs, HVAC Controls, Commercial LED Lighting Strips, PLC Interfacing Racks.

### Model Capacity Matrix Guide:

• TB1503 - TB1512 Series (15A Capacity): Perfect for small-scale signal lines, sensory inputs, relay connections, and low-power control modules.

• TB2503 - TB2512 Series (25A Capacity): The go-to mid-range standard for domestic breaker boxes, machinery power routing, and commercial LED lighting networks.

• TB4503 - TB4512 Series (45A Heavy-Duty Capacity): Tailor-made for thick, heavy-gauge wiring feeding high-horsepower industrial electric motors, heavy HVAC air handlers, and primary power distribution lines.

### Package Content Includes:

• 5 PCS x Heavy-Duty Screw Terminal Barrier Block Strips (Selected Model Array / Positions Count)

• 5 PCS x Transparent Removable Flame-Retardant PC Insulation Covers

Pro Panel Builder Installation Tip: For maximum long-term safety, crimp standard insulated fork or ring terminals onto your wire leads before inserting them under the pressure screws. When screwing down the terminal leads, torque firmly to ensure the wire core is flattened smoothly against the inner copper plate—this guarantees an airtight, zero-resistance electrical bond!