Welcome to Stemar

Our mission is to provide sound technically competitive
solutions for Transformers, Metering and Distribution components

Staff Profile

With a combined experience of over 100 years in instrument transformers and switchgear manufacturing Stemar staff's ultimate aim is always to ...let your need be our challenge...


Sten Maraldo - Managing and Technical Director

Email: sten.maraldo@stemar.com.au

Over 50 years experience in instrument transformer design and manufacture

Marcus Maraldo - General Manager

Email: marcus.maraldo@stemar.com.au

Over 20 years experience in Instrument Transformer design, QA Auditing, IT implementation, Production Management, Project Management and Process Improvement.


Jennette Robinson - Chief Adminstration Officer

Email:  sales@stemar.com.au



Eric Yuan - Sales and Customer Support

Email: eric.yuan@stemar.com.au

Over 10 years experience in Instrument Transfomer Production, Design and Customer Support

Graduate Electrical Engineer

Gordon Su - Chief Testing Officer , NATA Accredited Signatory

Email: support@stemar.com.au