Fieldpiece ACH4 400A AC Clamp Accessory Head

The Fieldpiece ACH4 is a compact clamp-on accessory head that converts AC current up to 400A into a millivolt AC signal, letting you read motor and compressor run/start amperage directly on a compatible Fieldpiece meter. The angled jaw opens to 1.8" for quick, one-handed wire isolation in tight electrical panels. Key Features Angled jaw claw isolates single conductors for fast, accurate testing Converts current directly to a millivolt AC signal (1A = 1mV) Ideal for checking motor and compressor run/start amps Works standalone with the EHDL1 handle or wirelessly via the EH4W kit Specifications Current range: 1–400A AC (RMS) Conversion rate: 1A AC to 1mV AC Resolution: 0.1A Accuracy: ±(1.5% rdg + 0.2A) 1–20A; ±(2.5% rdg + 0.3A) 20–100A; ±(3.5% rdg + 0.5A) 100–400A Frequency: 50–60Hz Maximum conductor diameter: 1.18" (30mm) Safety rating: CAT III 300V Compatibility Plugs into Fieldpiece HS26, HS33, HS35 and HS36 stick meters, the EHDL1 electronic handle, EH4W wireless handle, DL3 data logger and HG2/HG3 system analysers. Also works with any DMM featuring an mVAC range via the AHDL1 adaptor handle. Model: ACH4