Siemens SMFH26 Class Smf Overload Heater Element

Product Description

The SIEMENS SMFH26 is a Class SMF thermal overload heater element designed for use in motor starter and overload relay assemblies. Heater elements generate a calibrated amount of heat proportional to motor current, allowing the overload relay to trip and protect motors from sustained overcurrent conditions. The SMFH26 is a direct-replacement-style component sized for a specific current range within the SMF Class designation. Installation is performed by licensed electricians or qualified industrial maintenance technicians as part of motor control center or combination starter servicing.

Class SMF heater elements like the SMFH26 are used in SIEMENS and compatible thermal overload relays installed in motor starters, combination starters, and motor control centers. Typical applications include three-phase motor protection in commercial HVAC equipment, pump systems, compressors, and light industrial machinery. The heater element is selected based on the full-load amperage of the motor being protected and the ambient temperature correction factors for the installation environment.

Key Features

• Class SMF designation for use in compatible SIEMENS thermal overload relay assemblies
• Calibrated heater element provides current-proportional thermal response for accurate motor overload protection
• Compact form factor fits directly into overload relay heater pockets without modification
• Lightweight construction at 0.044 pounds for easy handling during service calls

Compatibility

Designed as an OEM-style replacement heater element for SIEMENS Class SMF thermal overload relays. Consult the SIEMENS heater selection table to confirm the correct current range for the motor being protected prior to installation.

Installation Notes

Installation should be performed by a licensed electrician or qualified technician. De-energize and lock out the motor control circuit per NFPA 70E and NEC requirements before removing or installing heater elements. Verify the heater element class and current range against the motor full-load amperage nameplate data before installing. Do not use heater elements that show signs of prior overload damage, discoloration, or deformation.

Technical Specifications

• Heater Class: SMF
• Length: 0.311 inches
• Width: 0.154 inches
• Height: 0.154 inches
• Weight: 0.044 pounds
• UPC: 75455425944

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: SMFH26