Features & Benefits
Two Ranges in One Clamp
The Bolt TLAR-S measures 20 A and 200 A AC on an adjustable range, with a 200 A continuous operating limit. Accuracy is 1.5% of reading ±0.1 A on the 20 A scale and 1.5% of reading ±0.5 A on the 200 A scale, across a 40 Hz to 10 kHz frequency range. Phase shift stays at or below 3 degrees from 1–20 A, 2 degrees from 20–80 A, and 2.5 degrees from 80–200 A, which keeps power and power factor measurements dependable across the full load range rather than only at the top of the scale.
Because the 20 A scale holds the same percentage accuracy at low current, the clamp is well suited to lightly loaded circuits and residential feeders, where a 200 A-only probe would leave you reading noise.
Built for Enclosures That Are Already Full
The clamp accepts conductors up to .59 in (15 mm), with an enclosure measuring 2.36 x 1.38 x 0.67 in and a total set weight under 1 lb. Four-foot probe leads and a 9-inch output cable, both rated to 600 V, give enough reach to route around existing equipment without crowding the recorder.
That footprint is the point. In a meter base or a capacitor bank controller where a full-size clamp physically will not close, the TLAR-S fits — which means current data from locations that would otherwise be voltage-only.
Safe Installation, No Downtime
As a clamp-style current transformer, the TLAR-S measures without direct electrical contact and without breaking the circuit, so there is no shutdown to schedule and no customer interruption to coordinate. It is rated to IEC 61010-1, 600V CAT III, with IP40 probes and an IP65 enclosure, and operates from 14°F to 131°F (-10°C to 55°C) — suitable for both a two-day study and a permanent installation.
The set includes three elements for three-phase measurement. These are only compatible with the Bolt Power Quality Recorder.
