ASSEMBLE PATH · ONTARIO TRADE 288R
Relay and Instrumentation Technician
A Relay and Instrumentation Technician performs some or all of the following:
NON-COMPULSORY IN ONTARIOCONSTRUCTION / BUILDING SYSTEMS
Original generated editorial image • not a real employee
WHY THE WORK MATTERS
Protection and control systems help electrical networks detect faults and respond correctly.
Relay and instrumentation technicians test, calibrate, diagnose and repair protective relays, controls, data-acquisition devices, computers and power-system instrumentation.
8000 hoursgeneral apprenticeship duration
$96,000estimated median at 2,000 paid hours
Ontario tradenon-compulsory classification
EXPLORE IN ORDER
Four questions. One clearer next step.
WHERE THE WORK LIVES
Real settings for real work
electric utilities and substationspower generation stationstransmission and distribution control facilitiesindustrial power systemsrail and public-infrastructure networks
EVIDENCE BASE
Sources & verification
Regulated, numerical and time-sensitive claims link to the authority used. Accessed and reviewed August 25, 2026.
Skilled Trades Ontario — Relay and Instrumentation Technician ↗Official scope, duties, training and certificationGovernment of Canada Job Bank — Ontario wages ↗Ontario low, median and high employee wage benchmarkSkilled Trades Ontario — Start an apprenticeship ↗Eligibility, sponsors and registrationOntario — OYAP ↗High-school apprenticeship pathway