Trunk Line Branch Terminal Blocks
Trunk line branch terminal blocks are designed to distribute power from a single incoming conductor to multiple outgoing branch circuits in industrial control and power distribution applications. These terminal blocks provide a secure, organized connection point while maintaining accessibility for inspection, maintenance, and future modifications. RSP Supply offers trunk line branch terminal blocks, along with feed-through and standard terminal blocks, with current ratings ranging from 101 amps to 125 amps.
Terminal blocks consist of an insulated housing with an internal conducting strip and clamping mechanism that secures electrical conductors. They allow multiple wires to be joined in a structured, reliable manner using connection methods such as screw clamp, spring cage, push-in, fast connection, or barrier-style terminations. Mounted on DIN rails or panel rails, terminal blocks simplify wiring layouts and support clean, semi-permanent connections that can be adjusted without disrupting adjacent circuits.
Phoenix Contact trunk line branch terminal blocks are engineered to align multiple terminal blocks—typically up to three—into a compact power distribution point using screw or Push-in connection technology. These blocks are commonly used in control panels where high-current distribution, space efficiency, and compliance with electrical standards are required. Selecting the appropriate terminal block type depends on current rating, connection method, grounding needs, and circuit protection requirements.
FAQs
Q: What is a trunk line branch terminal block?
A trunk line branch terminal block distributes power from a main supply conductor to multiple branch circuits within a control panel or electrical enclosure.
Q: What is the difference between feed-through and branch terminal blocks?
Feed-through terminal blocks connect one incoming wire to one outgoing wire, while branch terminal blocks allow one incoming conductor to connect to multiple outgoing conductors.
Q: What connection methods are available for terminal blocks?
Common connection methods include screw clamp, spring cage, push-in (often requiring ferrules), fast connection, and barrier-style connections using ring or spade terminals.
Q: What are ground terminal blocks used for?
Ground terminal blocks provide a direct connection to the panel or DIN rail, allowing circuits to be grounded without running individual wires to a main grounding point.
Q: What are fused and disconnect terminal blocks?
Fused terminal blocks include a fuse for overcurrent protection, while disconnect terminal blocks allow circuits to be manually opened for isolation without providing surge protection.
Why Buy Trunk Line Branch Terminal Blocks from RSP Supply
RSP Supply offers a dependable selection of trunk line branch terminal blocks, feed-through blocks, and power-rated terminal solutions for industrial control and power distribution systems. Our products are chosen to support high-current applications, organized panel layouts, and compliance with industry standards. Customers rely on RSP Supply for technically accurate components and consistent performance in demanding electrical environments.