The LA9G4SA is a 4-pole switch module from the TeSys range — essentially the heavy-duty switching block for high-current resistive loads like heaters or furnaces. Rated 700 A AC-1 at 40°C and ≤440 V, it’s a bolted-connection kit that comes as a set of 4 (one per pole). You’ll find it paired with TeSys contactors to extend pole count or to serve as a standalone disconnect in panels needing a compact, high-current switch.
What the Rating Means for Your Application
The headline number is 700 A in AC-1 duty (resistive load). That’s the full rated operational current — no derating needed at 40°C ambient, up to 440 V. If your load is motor or inductive, you’ll need to check the contactor’s AC‑3 curve, not this module’s AC‑1 figure. Altitude handling is solid: full current up to 3000 m, then derate above that to 5000 m.
Mounting & Compliance Notes
Bolted connection – expect M8 or M10 hardware for the busbars. Pollution degree 3 (IEC 60947‑1) means it’s rated for typical factory environments with conductive dust or humidity. The module carries global approvals: EN/IEC 60947‑4‑1, UL 60947‑4‑1, CSA C22.2 No 60947‑4‑1, and GB/T 14048.4 – so it’s safe for panels destined for North America, Europe, or China.