Motor Overloads | McMaster-Carr

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3.2"

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8 Products

Motor Starter Overload Protectors

Upgrade motor starters that use thermal overload protection with these solid-state overloads—they don't use heating elements, so enclosure ventilation and cooling is not required. All have a full-load amp adjustment dial to accommodate circuits with different full-load amp ratings.

If the full-load amp rating is not shown on your motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).

	Motor Protection	Ht.	Wd.	Dp.	Wire Connection	Certification		Each
2 Auxiliary Contacts with 1 Off, 1 On







	For Single Phase

	3 to 12	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	0000000


	5.5 to 22	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	000000




			For Three Phase

			0.75 to 3.4	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	3.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	000000


			3 to 12	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	000000
			5.5 to 22	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	000000
			10 to 40	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.2"	3.5"	3.2"	Screw Terminal	UL Listed, CSA Certified	0000000	000000
			13 to 52	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.3"	4.5"	4"	Screw Terminal	UL Listed, CSA Certified	0000000	000000
			25 to 100	5, 10, 20, 30	5, 10, 20, 30	Overvoltage, Phase Loss	2.3"	4.5"	4"	Screw Terminal	UL Listed, CSA Certified	0000000	000000