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Two different sizes, 21⁄2" and 31⁄2", are available in this popular style. Round meters have plastic cases with glass windows and are UL recognized. All DC versions have a self-shielding movement (calibration is not affected by stray magnetic field or magnetic mounting). AC meters listed have an iron-vane type movement and are calibrated at 60 Hz. Call Allied for sizes and ranges not shown.

Accuracy	± 2% F.S.
Application	For industrial or commercial
Approvals	RU
Brand/Series	25 Series
Connection Type	Stud
Cut Out, Panel	2.82 in., 71.6 mm Dia.
Depth	1.31" (33.3mm)
Diameter, Body	2.75 in. O.D, x 1.50 in. I.D
Diameter, Mounting Hole	0.16 in.
Dimensions	1.31" H x 2.75" Dia.
Dimensions, Cutout, Inches	2.82 Dia. in.
Display Type	Analog
Function	Ammeter
Impedance	0.001 Ohms (Approx.)
Material, Casing	Plastic
Measuring Range	0 to 50 A dc
Primary Type	Electromechanical
Range, Measurement	0 to 50 ADC
Repeatability	2%
Size	3-1?2 in.
Size, Thread	1?4-28
Standards	UL Recognized
Temperature Range	-20 to +65 °C
Temperature, Opening, Maximum	+65 °C
Temperature, Operating	-20 to +65 °C
Temperature, Operating, Minimum	-20 °C
Type	Electronic
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Accuracy ± 2% F.S.  Simpson Accuracy ± 2% F.S.  Analog Ammeters Accuracy ± 2% F.S.  Simpson Analog Ammeters Accuracy ± 2% F.S.   Application For industrial or commercial  Simpson Application For industrial or commercial  Analog Ammeters Application For industrial or commercial  Simpson Analog Ammeters Application For industrial or commercial   Approvals RU  Simpson Approvals RU  Analog Ammeters Approvals RU  Simpson Analog Ammeters Approvals RU   Brand/Series 25 Series  Simpson Brand/Series 25 Series  Analog Ammeters Brand/Series 25 Series  Simpson Analog Ammeters Brand/Series 25 Series   Connection Type Stud  Simpson Connection Type Stud  Analog Ammeters Connection Type Stud  Simpson Analog Ammeters Connection Type Stud   Cut Out, Panel 2.82 in., 71.6 mm Dia.  Simpson Cut Out, Panel 2.82 in., 71.6 mm Dia.  Analog Ammeters Cut Out, Panel 2.82 in., 71.6 mm Dia.  Simpson Analog Ammeters Cut Out, Panel 2.82 in., 71.6 mm Dia.   Depth 1.31" (33.3mm)  Simpson Depth 1.31" (33.3mm)  Analog Ammeters Depth 1.31" (33.3mm)  Simpson Analog Ammeters Depth 1.31" (33.3mm)   Diameter, Body 2.75 in. O.D, x 1.50 in. I.D  Simpson Diameter, Body 2.75 in. O.D, x 1.50 in. I.D  Analog Ammeters Diameter, Body 2.75 in. O.D, x 1.50 in. I.D  Simpson Analog Ammeters Diameter, Body 2.75 in. O.D, x 1.50 in. I.D   Diameter, Mounting Hole 0.16 in.  Simpson Diameter, Mounting Hole 0.16 in.  Analog Ammeters Diameter, Mounting Hole 0.16 in.  Simpson Analog Ammeters Diameter, Mounting Hole 0.16 in.   Dimensions 1.31" H x 2.75" Dia.  Simpson Dimensions 1.31" H x 2.75" Dia.  Analog Ammeters Dimensions 1.31" H x 2.75" Dia.  Simpson Analog Ammeters Dimensions 1.31" H x 2.75" Dia.   Dimensions, Cutout, Inches 2.82 Dia. in.  Simpson Dimensions, Cutout, Inches 2.82 Dia. in.  Analog Ammeters Dimensions, Cutout, Inches 2.82 Dia. in.  Simpson Analog Ammeters Dimensions, Cutout, Inches 2.82 Dia. in.   Display Type Analog  Simpson Display Type Analog  Analog Ammeters Display Type Analog  Simpson Analog Ammeters Display Type Analog   Function Ammeter  Simpson Function Ammeter  Analog Ammeters Function Ammeter  Simpson Analog Ammeters Function Ammeter   Impedance 0.001 Ohms (Approx.)  Simpson Impedance 0.001 Ohms (Approx.)  Analog Ammeters Impedance 0.001 Ohms (Approx.)  Simpson Analog Ammeters Impedance 0.001 Ohms (Approx.)   Material, Casing Plastic  Simpson Material, Casing Plastic  Analog Ammeters Material, Casing Plastic  Simpson Analog Ammeters Material, Casing Plastic   Measuring Range 0 to 50 A dc  Simpson Measuring Range 0 to 50 A dc  Analog Ammeters Measuring Range 0 to 50 A dc  Simpson Analog Ammeters Measuring Range 0 to 50 A dc   Primary Type Electromechanical  Simpson Primary Type Electromechanical  Analog Ammeters Primary Type Electromechanical  Simpson Analog Ammeters Primary Type Electromechanical   Range, Measurement 0 to 50 ADC  Simpson Range, Measurement 0 to 50 ADC  Analog Ammeters Range, Measurement 0 to 50 ADC  Simpson Analog Ammeters Range, Measurement 0 to 50 ADC   Repeatability 2%  Simpson Repeatability 2%  Analog Ammeters Repeatability 2%  Simpson Analog Ammeters Repeatability 2%   Size 3-1?2 in.  Simpson Size 3-1?2 in.  Analog Ammeters Size 3-1?2 in.  Simpson Analog Ammeters Size 3-1?2 in.   Size, Thread 1?4-28  Simpson Size, Thread 1?4-28  Analog Ammeters Size, Thread 1?4-28  Simpson Analog Ammeters Size, Thread 1?4-28   Standards UL Recognized  Simpson Standards UL Recognized  Analog Ammeters Standards UL Recognized  Simpson Analog Ammeters Standards UL Recognized   Temperature Range -20 to +65 °C  Simpson Temperature Range -20 to +65 °C  Analog Ammeters Temperature Range -20 to +65 °C  Simpson Analog Ammeters Temperature Range -20 to +65 °C   Temperature, Opening, Maximum +65 °C  Simpson Temperature, Opening, Maximum +65 °C  Analog Ammeters Temperature, Opening, Maximum +65 °C  Simpson Analog Ammeters Temperature, Opening, Maximum +65 °C   Temperature, Operating -20 to +65 °C  Simpson Temperature, Operating -20 to +65 °C  Analog Ammeters Temperature, Operating -20 to +65 °C  Simpson Analog Ammeters Temperature, Operating -20 to +65 °C   Temperature, Operating, Minimum -20 °C  Simpson Temperature, Operating, Minimum -20 °C  Analog Ammeters Temperature, Operating, Minimum -20 °C  Simpson Analog Ammeters Temperature, Operating, Minimum -20 °C   Type Electronic  Simpson Type Electronic  Analog Ammeters Type Electronic  Simpson Analog Ammeters Type Electronic