2-Position Side-Entry Terminal Block for PCB Power Distribution
The 1776112-2: It accepts 16-28 AWG solid or stranded wire and is rated for 12 A at 150 V — typical for distributing low-voltage DC power or control signals inside an industrial enclosure. The rising cage clamp termination, operated by an M2 screw, traps the wire against a nickel-plated copper conductor bar, giving a gas-tight connection that holds under vibration without cold flow. The black polyamide (nylon) housing carries a -40°C to 110°C operating range, so it handles unheated cabinets and outdoor telecom shelters.
Screw Cage Clamp Termination and Wire Range
The rising cage clamp mechanism is the defining termination feature here. Tightening the M2 screw lifts a nickel-plated copper clamp plate that presses the wire against the current bar — no wire ferrule required, though one helps with fine-stranded 28 AWG. The 16-28 AWG range means this block handles both a 16 AWG power feed and a 28 AWG thermocouple or signal wire in the same footprint. The clamp and screw are both nickel-plated copper alloy, which resists corrosion in humid panel environments and prevents the screw from galling against the clamp during tightening.
At 3.50 mm pitch, the two positions occupy the board edge — tight enough for dense terminal strips but with enough creepage for the 150 V rating. The side-entry orientation (horizontal with board) means wires run parallel to the PCB surface, saving vertical clearance inside shallow enclosures. Through-hole mounting anchors the block against the torque of screw tightening; the leads solder into plated holes and take the mechanical strain off the traces. The single-level design keeps the block height low, and the black PA housing provides basic chemical resistance and dielectric isolation.