Using the illustrated catalog number...

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Question 1 of 205eccefa4bacbc34ba4d48397

Using the illustrated catalog number selection chart, determine the correct catalog number for a motor starter that meets the following selection criteria: a 3-pole, vertically mounted, NEMA non-reversing starter with an open enclosure rated at 90 continuous amperes, fitted with an electronic overload relay with a standard feature set and an operating coil rated at 120 VAC/60Hz. See illustration EL-0180.

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🔍 Key Concepts

• Catalog number structure in illustration EL-0180 (what each letter/number position represents) • How NEMA size / continuous amperes and frame size suffix are selected for a 90 A non‑reversing starter • How to choose the correct OLR type (electronic C440) and AC coil suffix for 120 VAC / 60 Hz

💭 Think About

• Start at the left of the example catalog number and, using the chart, match each part of the description in the question (NEMA, starter, non‑reversing, 3‑pole, vertical, open enclosure, 90 A, electronic overload, 120 VAC/60 Hz coil) to the correct character in the catalog number • After you build the correct sequence of letters/numbers from the chart, compare that sequence, position by position, with each of the four answer choices to see which one matches completely • Pay special attention to which catalog positions are affected by mounting (vertical) and by OLR type / feature set, and which position is used for NEMA frame size vs. coil voltage

✅ Before You Answer

• Verify that the letter for standard is N for NEMA and not E (IEC) and that the device type is A for a starter, not a contactor • Confirm which contactor frame size suffix corresponds to 90 continuous amperes and ensure the selected answer uses that same suffix in the correct position • Double‑check that the OLR type and C440 designation in the answer you pick both indicate an electronic C440 overload with a standard feature set, and that the coil suffix corresponds to 120 VAC / 60 Hz (not any other voltage)

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