DIN-Rail Mounted Terminal Blocks -Compact sizefour circuits per inch at 300 or 600 Volts, 22-10 wire, without stacking. -Collar-type terminals with spring-action overlapping top plates: -Keep screws in position during shippingbacked out, ready for tightening once wire is installed. -Keep connections tight by maintaining pressure on conductors during expansions and contractions. -Made of stainless steel 410. -Large opening makes wiring easy. -Insulating walls on all sides of entrance to collar, guide the wire into the lug, strands do not go astray. -Blocks are installed and removed without moving adjacent blocks. X005 Jumper