THE ULTIMATE PROTECTIVE RELAY TEST SYSTEMS
We provide the tools you need to test your protective relays & meters.
MANTA TEST SYSTEMS CUSTOMER QUICK LINKS
RMA REQUEST (RETURNS)
If your equipment requires service, please click the link below which will bring you directly to the REPAIR RMA section of the Doble Contact Form. An RMA and further information will be sent to you by email.
CALIBRATION RMA
We are now using the Doble contact form for all requests. The link below will send you directly to the area of the form for CALIBRATION RMAs. An RMA and further information will be sent to you by email.
CONTACT INFO
Doble Engineering Company
123 Felton Street
Marlborough, MA 01752 USA
tel +1 617 926 4900
fax +1 617 926 0528
Sales Department:
[email protected]
Technical Support:
email: [email protected]
phone: 888.443.6253
General Inquiries:
[email protected]
Accounting Department:
[email protected]
MANTA TEST SYSTEMS VIDEOS
Visit the Manta Test Systems YouTube channel here to view our selection of training and information
ISO CERTIFICATION
Download our ISO 9001:2015 certificate.
Doble Engineering Company Welcomes Manta Test Systems as New Subsidiary
Welcoming Manta Test Systems to the Doble Team
We are pleased to announce that Manta Test Systems is now a part of Doble Engineering Company.
Relay Testing 
