Overview
The General Electric AB-40 50-103021-PZXE1 is a rugged analog AC voltmeter engineered for accurate voltage monitoring in industrial control and power distribution systems. With a 150V full-scale rating and 120:1 potential transformer (PT) ratio, this meter displays AC voltages in the 0–18 kV range on the secondary side. Built to withstand harsh environments, the AB-40 is a proven choice for maintenance technicians, system integrators, and control engineers requiring dependable voltage readings at 50–60 Hz operation.
Key Features
- 150V full-scale AC rating with 120:1 PT ratio for high-voltage applications
- Robust meter movement designed for industrial panel mounting
- 50–60 Hz operation for global electrical standards
- Analog dial display for immediate voltage reference without electronic dependencies
- Compact form factor suitable for existing control panels and switchboards
Technical Specifications
- Meter Type: AB-40 AC Voltmeter
- Voltage Rating: 150V AC full scale
- PT Ratio: 120:1 (primary-to-secondary)
- Frequency: 50–60 Hz
- Output Range: 0–18 AC kilovolts (referenced to PT primary)
- Peak Circuit Voltage: 0.92 kV to ground
- Weight: 960 grams
- Manufacturer: General Electric (Ross Hill Controls)
- Part Number: 50-103021-PZXE1
- Condition: Used, tested and fully functional
Typical Applications
This AC voltmeter is ideal for:
- Power distribution monitoring in utility and industrial settings
- Control panel voltage indication and troubleshooting
- Switchboard and transformer secondary voltage measurement
- Field commissioning and maintenance of AC electrical systems
- System integration into legacy or modern control cabinets
Compatibility & Replacements
Compatible With
- Potential transformer (PT) outputs with 120:1 step-down ratios
- Industrial AC power systems operating at 50–60 Hz
- Standard DIN rail and panel-mount enclosures
- Existing GE AB-40 series metering panels and switchboards
- Control systems requiring analog voltage indication without digital conversion
Replaces / Drop-In Replacement For
- GE 50-103021-PZSJ2 (150V AC, 0–600V full scale variant)
- GE 50-103021-PZSM2 (0–750V AC variant with same 150V rating)
- Other AB-40 AC voltmeter models with 120:1 PT ratio specification
Works With
- Voltage potential transformers (PTs) rated for 120:1 step-down
- General Electric and third-party control software (analog input acquisition only)
- AC power systems and microprocessor-based protection relays
- Legacy industrial electrical panels and modernization upgrades
