Compact Type 1+2 AC Surge Protection for Space-Limited Panels
LY1-C40M/2(S) is a compact two-pole pluggable Type 1+2 AC surge protective device for single-phase L+N distribution systems. Its mini modular construction combines a 7kA impulse-current capability with 20kA nominal and 40kA maximum discharge ratings, helping protect power circuits while reducing the DIN-rail space required inside compact panels.
Compact 2P / L+N design for single-phase distribution systems
7kA Iimp, 20kA In, and 40kA Imax surge ratings
75V to 440V AC versions for different low-voltage systems
Pluggable modules with visual status indication and optional remote contact
Suitable Applications
LY1-C40M/2(S) is suitable for single-phase L+N power systems requiring compact Type 1+2 surge protection in space-limited distribution and equipment panels.
Compact Distribution Boxes
For space-limited single-phase distribution boxes requiring L+N surge protection.
Control Cabinets
Suitable for automation cabinets, machinery panels, and compact industrial control systems.
UPS Power Systems
Helps protect UPS input or output circuits when voltage and protection configuration match the installation.
Solar Inverter AC Output
For the AC output side of solar inverters when the selected voltage version matches the system.
FAQ
Common questions about LY1-C40M/2(S) compact two-pole pluggable Type 1+2 AC surge protective device selection.
What is LY1-C40M/2(S) used for?
LY1-C40M/2(S) is used for surge protection in compact single-phase L+N distribution systems, including small distribution boxes, equipment cabinets, UPS systems, and solar inverter AC output circuits.
Is LY1-C40M/2(S) a single-pole or two-pole SPD?
The LY1-C40M/2(S) model is a two-pole device intended for L+N single-phase circuits. The existing page title should therefore be changed from single-pole to two-pole.
What surge ratings does this SPD provide?
The device provides 7kA impulse discharge current Iimp, 20kA nominal discharge current In, and 40kA maximum discharge current Imax.
What voltage options are available?
Maximum continuous operating voltage options include 75V, 150V, 275V, 320V, 385V, and 440V AC. The voltage version must be selected according to the nominal system voltage.
What is the benefit of the compact pluggable design?
The compact format reduces DIN-rail space, while the pluggable modules make inspection and replacement easier without replacing the complete wired base.
What should be confirmed before ordering?
Confirm the system voltage, L+N circuit arrangement, required surge ratings, 63A maximum backup-fuse coordination, DIN-rail space, conductor size, and remote-contact requirement.
