Inventor

ZYLSTRA HENRY J

US26 patents

⚠️ This page may combine multiple inventors who share the name “ZYLSTRA HENRY J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZYLSTRA HENRY J

SQUARE D CO

Time delay undervoltage release

Fault-powered power supply

Loss of neutral or ground protection circuit

High saturation three coil current transformer

Trip indicator assembly for electronic circuit breaker

Power supply incorporating circuit breaker and fault detection circuit

Add-on ground fault module

Electronic system for high amperage circuit interruption apparatus

Plug-in power supply

Field installable electrical operator for a circuit breaker

Electronic control circuit for a bidirectional motor

Plug-in power supply

Quick responding instantaneous trip system

Compact coil assembly for transient voltage protection

Ground fault desensitization circuit for electronic breaker

Voltage-to-frequency squared circuit

High level magnetic trip circuit

SQUARE D

Circuit breaker having an electronic fault sensing and trip initiating unit

Circuit breaker having an electronic fault sensing and trip initiating unit

Circuit breaker having an electronic fault sensing and trip initiating unit

Circuit breaker having an electronic fault sensing and trip initiating unit

Portable ground fault circuit interrupter

Circuit breaker having an electronic fault sensing and trip initiating unit

ZYLSTRA HENRY J

Current sensor for earth leakage module

Portable remote racking device for a circuit breaker

Earth leakage detection module with robust transient suppression