2801256

The Phoenix Contact 2801256 is a surge protection device designed for single 2-wire floating signal circuits. It integrates a protective plug and base element with a multi-stage status indicator.

This device operates with a nominal voltage of 4 V DC and a maximum continuous operating voltage of 30 V DC or 21 V AC. It has a nominal current rating of 1000 mA up to 40°C and a residual current of less than 1 µA. The surge protection capabilities include a nominal discharge current of 10 kA (8/20 µs) for both core-core and core-earth paths, and an impulse discharge current of 2.5 kA (10/350 µs).

Key electrical specifications include voltage protection levels ranging from ≤ 55 V to ≤ 1300 V depending on the test classification (C1, C2, C3, D1). The response time is very fast, at ≤ 1 ns for core-core and ≤ 100 ns for core-earth. It also features a low input attenuation of 0.3 dB and a cut-off frequency of 1.1 MHz.

Mechanically, the device has dimensions of 109.3 mm height, 17.7 mm width, and 77.5 mm depth, with a horizontal pitch of 1 division. It is designed for DIN rail mounting and has a housing material of PA 6.6 with a V0 flammability class according to UL 94. The operating ambient temperature range is -40 °C to 70 °C, and it has an IP20 degree of protection.