Overview
The Yokogawa 103021PZZZ is a 4¼” analog switchboard AC voltmeter engineered for precise voltage measurement in industrial and utility environments. This transformer-rated unit operates at 0–150V AC with dual 50/60Hz frequency capability, delivering stable readings across a wide range of power system applications. As part of the proven AB40 switchboard meter series, this gauge combines proven engineering with robust field-tested design.
Key Features
- Meets ANSI-C39.1 accuracy class 1 specification
- Weathertight metal case construction for harsh operating environments
- Transformer-rated, 0–150V AC range with 50/60Hz dual-frequency operation
- 4¼” panel-mounted switchboard instrument format
- Interchangeable scales for flexible installation
- Optional illumination available for improved visibility in low-light conditions
Technical Specifications
- Measurement Type: AC Voltage
- Input Range: 0–150V AC
- Frequency Rating: 50/60 Hz
- Configuration: Transformer-Rated
- Case Material: Metal
- Case Size: 4¼ inches (switchboard standard)
- Accuracy Class: ANSI-C39.1 Class 1
- Construction: Weathertight
- Part Number: 103021PZZZ
- Mounting: Panel/Switchboard
Typical Applications
The Yokogawa 103021PZZZ is commonly deployed in:
- Electrical switchboards and control panels
- Utility power distribution systems
- Industrial AC voltage monitoring
- Generator and transformer output measurement
- Power plant and substation instrumentation
- Facility maintenance and troubleshooting
Compatibility & Replacements
Compatible With
- Standard 4¼” switchboard openings (DIN / NEMA panel cut-outs)
- AC power systems rated 50 or 60 Hz
- Transformer-based voltage measurement circuits
- Industrial control and automation systems
Replaces / Drop-In Replacement For
The Yokogawa 103021PZZZ directly replaces similar AB40 series transformer-rated AC voltmeters with matching 0–150V range and 4¼” form factor. For specific model compatibility, verify your existing gauge dimensions and electrical specifications before ordering.
Works With
- Standard panel meter mounting brackets and hardware
- Voltage transformer (PT) secondary circuits
- Switchboard and cubicle enclosure designs
- ANSI-C39.1 compliant control system installations
