METZ CONNECT CPW-E12 Type 2 Surge Arrester 1-Pole+N 230/400 V 10 kA DIN Rail Black/White 1102810520

The METZ CONNECT CPW-E12 stands out among surge arresters by combining a compact 22.5 mm DIN rail footprint with robust Type 2 protection for both single-phase and three-phase systems up to 230/400 V. Unlike many alternatives that force a trade-off between space and performance, this unit delivers a 20 kA maximum discharge current and fast response in a housing that fits standard distribution boards without crowding adjacent modules.

Highlights

• Type 2 surge protection per IEC/EN 61643-11 for main distribution and sub-distribution boards
• 1-pole + N configuration protects L-N and N-PE paths with a voltage protection level below 1.5 kV
• High discharge capacity: 10 kA nominal (8/20 µs) and 20 kA maximum (8/20 µs)
• Wide AC operating range: nominal 230/400 V, continuous up to 250 V AC
• Compact DIN rail module: only 22.5 mm wide, 95 mm deep, 75 mm high, weighing 170 g
• Durable thermoplastic housing in black or white, IP20 rated for indoor use
• Operates reliably from -40 °C to +80 °C with response time under 25 ns

In daily use

Installation is straightforward on a 35 mm DIN rail; the CPW-E12 snaps into place and connects with standard screw terminals rated for 10 A load current. In service, it continuously monitors the line and neutral, diverting transient overvoltages to earth before they can damage sensitive electronics. The visual status indication (if equipped) and robust construction mean minimal maintenance, while the choice of black or white allows discreet integration into any panel design. For systems with frequent switching surges or lightning exposure, this arrester provides a dependable first line of defense without requiring additional wiring space.

Full specifications

• Product type: Surge arrester (SPD)
• SPD type: Type 2
• Nominal AC input voltage (Un): 230/400 V
• Maximum continuous operating voltage (Uc): 250 V AC
• Nominal discharge current (In) (8/20 µs): 10 kA
• Maximum discharge current (Imax) (8/20 µs): 20 kA
• Voltage protection level (Up) L-N: < 1.5 kV
• Voltage protection level (Up) N-PE: < 1.5 kV
• Protection modes: L-N, N-PE
• Number of poles: 1-pole + N
• Maximum load current: 10 A
• Mounting type: DIN rail
• Degree of protection: IP20
• Operating temperature range: -40 to +80 °C
• Response time: < 25 ns
• Housing material: Thermoplastic
• Colour: Black, White
• Standards compliance: IEC 61643-11, EN 61643-11
• Dimensions (W x D x H): 22.5 x 95 x 75 mm
• Weight: 170 g

Final note

For electrical contractors and panel builders, the METZ CONNECT CPW-E12 offers a proven, space-saving surge protection solution that meets international safety standards and withstands demanding environmental conditions.