The Allen-Bradley Bulletin 100 Contactors provide a versatile solution for industrial motor control, available in both compact IEC versions and more robust NEMA-rated models. IEC contactors are designed to save panel space and meet precise load-rated applications, while NEMA designs emphasize durability, service factor margins, and rugged performance suited for North American industrial standards.
We are not authorized by Allen-Bradley. All products come with a one year warranty.
IEC contactors (Bulletin 100‑C series) focus on compact size, defined utilization categories, and lower power consumption. NEMA-style contactors are larger, support higher service factors, and are built for heavy-duty applications with broader tolerances.
Choose IEC contactors for space-constrained panels and specific load types (e.g., resistive, induction). Select NEMA contactors when you need rugged, versatile devices that can handle wider operating conditions, including harsh environments or frequent cycling.
Yes—both styles support auxiliary contact blocks, timers, surge suppressors, mechanical interlocks, and safety contact versions. Many accessories are snap-on and compatible across sizes.
No—they follow different engineering standards and form factors (IEC 60947 vs. NEMA ICS). Mixing them in a single starter or panel can cause compatibility and performance issues.
Coils are available in a wide range of AC and DC voltages—modern IEC styles include wide-range universal coils, while NEMA versions may offer standardized or configurable voltage ranges.
IEC contactors are rated by utilization categories (AC‑1 through AC‑4) indicating suitability for different load types and switching conditions, such as motors, heaters, or plug-in applications.
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