721-603/000-042

The Wago 721-603/000-042 is a 1-conductor male connector from the MCS MIDI product family, designed as a 3-pole plug with 5.00mm pin spacing. It utilizes CAGE CLAMP® spring pressure termination for quick and reliable connection of solid or stranded conductors without the need for ferrules. The connector is free hanging (in-line) and comes in a light gray housing, making it suitable for various wiring applications in control cabinets and industrial equipment.

Electrically, this connector supports wire cross-sections from 0.08 mm² to 2.5 mm² with a strip length of 8-9 mm. It carries multiple current and voltage ratings depending on the applicable standard: 15 A at 600 V under UL 1977, 300 V under UL 1059 (Use Groups B and D), and 12 A at up to 630 V under IEC 60664-1 (with specific overvoltage categories and pollution degrees). The contact surface is tin-plated, and the connector includes a preceding PE (protective earth) contact for grounding.

Mechanically, the connector measures 18.2 mm in width, 14.3 mm in height, and 27.5 mm in depth. It operates over a wide temperature range of -60°C to 100°C. The plug wire entry is 180°, and actuation is performed using an operating tool applied parallel to the conductor. The connector is 100% protected against mismating, ensuring correct orientation during installation.

This male connector is typically used in conjunction with matching headers to form a complete terminal block system. It is well suited for industrial automation, power distribution, and machine wiring where reliable, maintenance-free connections are required.