A DP (Double-Pole) switch is used when you want to switch OFF/ON both the live and neutral at the same time. Very common in mains-powered equipment where full isolation matters.
🔹 DP 20A switch — when it’s normally used
Typical load: up to ~4–4.5 kW (at 230V)
Common scenarios
Water heaters (small geysers)
Washing machines
Dishwashers
Small pumps
Dedicated socket outlets for appliances
Air fryer / oven (small to mid size)
Why 20A?
Appliances drawing 10–16A
Normal household equipment
Thinner cables (2.5–4 mm² depending on code)
👉 Think standard heavy appliance, but not extreme heat loads.
