The Circutor SEC72 FA 300/5A (code M105YH) is an exchangeable scale plate for the EC72 FA series moving iron ammeter. It carries a 300/5 A full-scale range for use with 300/5 A current transformers, fitting into 72 72 mm panel-format instruments. Measuring just 60 60 1 mm and weighing 4 g, this face scale lets an existing EC72 FA ammeter be re-ranged or restored without replacing the complete instrument.

Technical specifications:

• Model: SEC72 FA 300/5A
• Circutor code: M105YH
• EAN: 8433059004880
• Full scale: 300/5 A
• Compatible device: EC72 FA moving iron ammeter
• Panel module size: 72 72 mm
• Scale dimensions: 60 60 1 mm
• Weight: 0.004 kg

Features and benefits:

• Exchangeable design allows the scale plate to be swapped independently, so an EC72 FA ammeter can be re-ranged without purchasing a complete new instrument.
• 300/5 A full-scale range is one of the standard CT ratios represented across the SEC72 FA product series, providing a direct drop-in option for panels using that transformer ratio.
• Exact 60 60 mm footprint and 1 mm thickness fit the EC72 FA face recess precisely, requiring no modification.
• At 4 g, the scale plate adds negligible mass to the ammeter assembly and places no additional load on the instrument movement.

Applications:

• Re-scaling an installed EC72 FA ammeter after a current transformer replacement or circuit upgrade to a 300/5 A ratio.
• New switchgear and panel board assemblies specifying 72 72 mm moving iron ammeters with a 300/5 A CT ratio.
• Maintenance and spare-parts stock for facilities running Circutor EC72 FA ammeter installations.
• OEM panel builds where a correctly calibrated 300/5 A scale face is required for 72 72 mm format ammeters.

Also known as: Circutor SEC72 FA 300/5A, SEC72 FA 300/5A M105YH, EC72 FA replacement scale 300/5A, moving iron ammeter scale 300 5A, Circutor M105YH ammeter scale.