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Thermal Units

SQUARE D Thermal Unit, B12.8

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Thermal Unit, Model B12.8, For Use With Square D Motor Starters, NEC Article 430 Part C, NEMA Size 00, 0, 1, 1P, 2, Selection (1) Motor FLA/SF (2) Motor and Starter in SAME Ambient Temp (3) For 1.15 to 1.25SF Thermal Unit Amp Equal Motor FLA/1.0SF Thermal Unit Amp Equal 90% Motor FLA, IF Motor Ambient Temp +18F of Starter-Thermal Unit Amp Equal 10% Derate of (3), IF Motor Ambient Temp -18F of Starter-Thermal Unit Amp Equal 5% Increase of (3), Do NOT Exceed Starter Rating

Grainger Item #	1H609
Price (ea.)	$26.90
Brand	SQUARE D
Mfr. Model #	B12.8
UNSPSC #	39121521
Ship Qty.	1
Sell Qty. (Will-Call)	1
Ship Weight (lbs.)	0.01
Availability	Typically in Stock
Catalog Page No.	317
Country of Origin (Country of Origin is subject to change.)	Mexico

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Item		Thermal Unit
For Use With		Square D NEMA Motor Starters 00, 0, 1, 1P, 2
FL Amp @ 3-Ph/ Size 00,0,1/ Standard Enclosure		8.14
FL Amp @ 3-Ph/ Size 2/ Standard Enclosure		8.47
FL Amp @ 1-Ph/ Size 00,0,1/ Open & Large Enclosure		9.04
FL Amp @ 1-Ph/ Size 1P/ Open & Large Enclosure		9.32
FL Amp @ 1-Ph/ Size 00,0,1/ Standard Enclosure		8.55
FL Amp @ 1-Ph/ Size 1P/ Standard Enclosure		9.32
FL Amp @ 1-Ph/ Size 2/ Standard Enclosure		9.39
FL Amp @ 3-Ph/ Size 00,0,1/ Open & Large Enclosure		8.69
FL Amp @ 3-Ph/ Size 2/ Open & Large Enclosure		8.90
FL Amp @ 1-Ph/ DP 20-30A/ Standard Enclosure		9.98
FL Amp @ 1-Ph/ DP 40A/ Standard Enclosure		10.2
FL Amp @ 1-Ph/ DP 50A/ Standard Enclosure		10.1
FL Amp @ 3-Ph/ DP 20-30A/ Standard Enclosure		8.53
FL Amp @ 3-Ph/ DP 40A/ Standard Enclosure		9.14
FL Amp @ 3-Ph/ DP 50A/ Standard Enclosure		9.36
FL Amp @ 3-Ph/ DP 20-30A/ Open & Large Enclosure		9.29
FL Amp @ 3-Ph/ DP 40A/ Open & Large Enclosure		9.66
FL Amp @ 3-Ph/ DP 50A/ Open & Large Enclosure		10.2
FL Amp @ 1-Ph/ Man. Size 0/ Open & Large Enclosure		10.4
FL Amp @ 1-Ph/ Man. Size 0/ Standard Enclosure		9.83
FL Amp @ 1-Ph/ Man. Size 1/ Open & Large Enclosure		10.4
FL Amp @ 1-Ph/ Man. Size 1/ Standard Enclosure		9.83
FL Amp @ 1-Ph/ Man. Size 1P/ Open & Large Enclosure		10.4
FL Amp @ 1-Ph/ Man. Size 1P/ Standard Enclosure		9.83
FL Amp @ 3-Ph/ Man. Size 0/ Open & Large Enclosure		8.84
FL Amp @ 3-Ph/ Man. Size 0/ Standard Enclosure		8.60
FL Amp @ 3-Ph/ Man. Size 1/ Open & Large Enclosure		8.84
FL Amp @ 3-Ph/ Man. Size 1/ Standard Enclosure		8.60

Other Popular Terms for this Product

• Motor Overload Protection (3736)

• Motor Starter Heaters (377)

• Motor Starter Thermal Units (377)

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Electrical > Starters and Contactors > Thermal Units

SQUARE D Thermal Unit, B12.8

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