The CLASS 10 trip class governs how fast the bimetal strip deflects under overload. Power dissipation per pole is 1.9 W. That's typical for an S0 frame and adds up to about 5.7 W total for three-phase. Not negligible if you're packing relays tightly, but within the free-air rating of the contactor assembly. The relay is temperature-compensated from -40 to +60 °C, so it won't drift with ambient changes in a warm panel.
Mounting and wiring detail
Fastening method is 'Contactor mounting' — it clips onto the output side of a Siemens SIRIUS contactor of the S0 frame. No additional DIN rail is needed; it snaps directly onto the contactor's three terminals and is mechanically interlocked. Main circuit terminals are screw-type, accepting two conductors per pole: 2x 0.5…1.5 mm² or 2x 0.75…2.5 mm². The screwdriver shaft must be 5-6 mm diameter with a Pozidriv PZ2 tip.
The brand is Siemens SIRIUS, and the product designation is 'thermal overload relay'. Compliance-wise, there's a substance prohibitance date of 10/01/2009 which aligns with RoHS — that means the relay was designed to be lead-free and RoHS-compliant from that date onward. If you need a formal RoHS or REACH declaration, we can provide that with the RFQ.