Siemens IEC Thermal Overload Relays

Texas Belting & Supply stocks 42 Siemens IEC Thermal Overload Relays - IEC metric-frame aluminum motors for imported machinery and OEM equipment built to European standards. Metric shafts, mounting, and flange dimensions drop into IEC-designed drives. Available, with in-stock items that typically ship same-day. Call (888) 203-2358 for sizing help.

Common Applications

• Imported and OEM machinery
• Metric-framed equipment replacements
• Conveyors, pumps, and fans on IEC drives
• Machine builders standardizing on IEC

Frequently Asked Questions

How do IEC frames differ from NEMA?

IEC uses metric shaft diameters, mounting dimensions, and flanges (B3/B5/B14). They are not interchangeable with NEMA frames - match the IEC designation exactly.

What mounting types are available?

Foot mount (B3), flange (B5/B14), and combinations. Confirm the mounting code your equipment requires.

Are these 50/60 Hz?

Verify the frequency and voltage - IEC motors are often dual-rated; match your supply.

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