The Siemens 3RB1065-2LG0 is an electronic overload relay rated 300...630 A, Class 20, with connecting bars for direct mounting on 3TF68/69 contactors or for individual installation with manual reset. The 300-630 A range covers large motor loads — pumps, compressors, conveyors — where thermal bimetals would drift and need recalibration. Class 20 trip curve means it allows up to 20 seconds at 7.2× Ie before tripping, matching the starting profile of high-inertia loads without nuisance trips. The connecting bars simplify panel assembly: no separate wiring between relay and contactor terminals.
Siemens 3RB1065-2LG0 Electronic Overload Relay, 300-630A
MPN3RB1065-2LG0
Siemens 3RB1065-2LG0 electronic overload relay, 300...630 A, Class 20, with connecting bars for 3TF68/69 contactor mounting or individual installation, manual reset.
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026
Product details
Frequently asked questions
What is the 3RB1065-2LG0 overload relay rated for?
It is rated 300...630 A, Class 20, with connecting bars for direct mounting on 3TF68/69 contactors or individual installation with manual reset.
Where can I buy the 3RB1065-2LG0?
The 3RB1065-2LG0 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
3RB1065-2LG0