Yokogawa 250 340 LSNJ UL

The unit connects via standard threaded rear stud terminals. You must wire the secondary leads of a 25:5 ratio Current Transformer directly across these terminals—never wire it to an un-transformed high-voltage line.

Unlike pivot-and-jewel mechanisms that can wear out or stick when exposed to continuous motor vibration, the taut-band suspension uses thin metal ribbons to suspend the moving coil. This eliminates mechanical friction and prevents pointer hysteresis in harsh industrial environments.

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This model features a full-scale dial calibrated for 0 to 25 Amps AC at 60 Hz, while operating on a standard 0–5 AAC secondary input signal from an external Current Transformer.

The "UL" designation confirms that the meter complies with UL safety standards (Underwriters Laboratories recognized), making it suitable for panel builders requiring UL 508 / UL 61010 compliance for inspector approval in North America.