Model Number: AM-1001-#3871 Key Specifications/Special Features: FeaturesCentre zero typeMoving magnet constructionHeavy duty brass boltsCasing Size42mm/52 mm/ 60 mmRange120/30/50/60 A (with out shunt), 80/100A (with shunt)Connection BoltM5X0.8/M8X1.25Discharge indicatorOptional in 60 mmBulb BA 9S12/24V FeaturesCross coil moving magnet air-cored movement. Standard range Casing size 52 mm/60 mm Range 8-16 V/16-32 V/20-32V/24-40 V Bulb BA 9S/T 10 wedge base