The Suntree AC Surge Protector (SPD) 40kA 2 Pole Single Phase is a Type 2 surge protector designed to shield single-phase alternating current electrical infrastructure, sensitive electronic appliances, and solar inverter AC distribution boards from transient overvoltages . It safely diverts harmful electrical surges—such as grid spikes and residual lightning impacts—away from connected equipment down to the earth.

Suntree AC Surge Protector (SPD) 40kA 2 Pole Single Phase Technical Specifications

Device Type: Type 2 AC Surge Protective Device
Number of Poles: 2 Pole (typically protecting Live and Neutral lines)
System Phase: Single-Phase
Maximum Continuous Operating Voltage (\(U_{c}\)): ~275V AC (optimized for standard 220V–240V AC power grids)
Nominal Discharge Current (\(I_{n}\)): 20kA (8/20µs wave profile)
Maximum Discharge Current (\(I_{max}\)): 40kA (8/20µs wave profile)
Voltage Protection Level (\(U_{p}\)): < 1.8kV
Response Time: < 20ns
Mounting Configuration: 35mm Standard DIN Rail
Ingress Protection Rating: IP20 (intended for indoor or enclosed panel installation)

Suntree AC Surge Protector (SPD) 40kA 2 Pole Single Phase Key Features

Modular Pluggable Core: The device relies on a two-body design. If a massive electrical surge degrades the protective module, you can pull it out and snap in a replacement module without needing to rewire the entire base or power down the whole consumer unit.
Visual Status Indicators: Features mechanical color-coded flag windows on the front face of each module. Green indicates the device is operating properly; Red indicates the internal thermal/overcurrent tripping has triggered and the module must be replaced immediately.
Flame Retardant Design: Constructed using high-grade thermoplastic materials (PBT/PA66) that comply with UL94 V-0 anti-flaming industrial standards.

Important Installation Context

Earthing Requirement: A surge protector cannot function without a dedicated grounding wire. The excess electrical charge requires a short, thick grounding pathway to the earth bar to effectively clear surges.
Upstream Protection: It must always be installed in parallel with your system and placed downstream of a dedicated backup overcurrent device—such as a 16A to 32A miniature circuit breaker (MCB) or fuse—to prevent continuous fault currents in the event of an SPD failure.