Overview
The General Electric 50-103131-LSSC1 is a precision AC ammeter engineered for accurate current measurement in industrial control panels and electrical test environments. This AB-40 model features an 80:1 current transformer (CT) ratio with 5A full-scale deflection, making it ideal for monitoring AC circuits in the 400A range (0–400A dial). Built for durability and reliability, this ammeter delivers the precision measurements that controls engineers and maintenance technicians depend on.
Key Features
- 80:1 CT Ratio: Enables measurement of up to 400A AC circuits with a 5A full-scale meter
- 5A Full-Scale Rating: Standard meter movement for reliable analog readings
- AC Operation: Designed for 40–70 Hz operation, suitable for standard industrial power systems
- Robust Panel Mount Design: Compact form factor fits standard 4.5″ instrument cutouts
- Durable Construction: Classic industrial-grade housing proven in field service
Technical Specifications
- Manufacturer: General Electric (GE)
- Model Number: 50-103131-LSSC1
- Type: AB-40 AC Ammeter
- Full Scale Deflection: 5A
- CT Ratio: 80:1
- Dial Range: 0–400A
- Frequency Range: 40–70 Hz
- Approximate Weight: 2–3 lbs
- Approximate Dimensions: 4.5″ × 4.5″ × 4.5″
- Code/Markings: CE, Made in USA
Typical Applications
- Industrial motor control center (MCC) amp monitoring
- Power distribution panel current indication
- Electrical troubleshooting and field testing
- Single-phase and three-phase circuit load measurement (one phase per ammeter)
- Legacy industrial panel upgrades and replacements
Compatibility & Replacements
Compatible With
- Standard current transformer (CT) secondary circuits rated 0–5A
- Industrial AC power systems operating 40–70 Hz
- Electrical test and measurement infrastructure
- Panel mount cutouts for AB-series meters
Replaces / Drop-In Replacement For
- Other GE AB-40 ammeter variants with matching CT ratio (80:1) and full-scale rating (5A)
- Early-generation AB-40 panel meter models with equivalent electrical characteristics
- Verify exact mounting and terminal compatibility with your system integrator before ordering
Works With
- Current transformer (CT) wired secondary circuits
- Analog industrial instrumentation networks
- Legacy control systems and motor control centers (MCCs)
- Standard electrical panel layout for 4.5″ square cutout instruments
