The 1-2834011-4: It uses a push-in spring clamp (screwless) for the wire termination, so you push the stripped conductor straight into the entry and the spring holds it. The through-hole, kinked-pin mounting anchors the block against the board insertion force. Rated 6 A per position at 300 V, with a wire range of 14-20 AWG, this block suits control cabinet I/O, lighting drivers, and HVAC controller boards where the wiring is field-terminated and the enclosure sees moderate vibration.
Push-In Spring vs Screw Clamp — the Termination Decision
The 1-2834011-4 uses a screwless leg-spring, push-in termination. That means you don't need a screwdriver to tighten each position — just push the wire in. The trade-off is that the spring force is fixed, so you must use the correct wire gauge (14-20 AWG) and strip length. Compare this to the sibling 1-2834021-4, which uses a push-button clamp at a tighter 0.098" (2.50 mm) pitch and a lower 5 A rating. The 1-2834021-4 is the choice when board space is tight and the current stays under 5 A; the 1-2834011-4 gives you the extra amp per circuit and the wider pitch for easier wire dressing.