3/00 13 NEMA/DEFINITE PURPOSE TYPE CONTACTORS AND STARTERS..... Index and Instructions: Pages 13-129 to 13-133
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Thermal Unit Selection - Schneider Electric Digest Plus
Check thermal unit tables for current ranges. For thermal unit selection tables for other devices including obsolete devices, consult the Customer Care Center at 1-888-778-2733.
Square D Thermal Overload Heater Units - Southland Electric
Square D Thermal Unit Selection (Work in Progress) Table 1 * Click here to browse our inventory of Square D heater elements at our online store
Section 13—Thermal Overload Unit Selection
This section identifies the thermal overload units needed for the starters specified in an order. Tables are based on motor full-load amps and provide the catalog number for the appropriate thermal units to be used at that current rating.
Locate proper selection table from index, Pages 19 and 20. The proper thermal unit number will be found adjacent, to the right of the range of full load currents in which the motor full load current or resultant full load current falls. See Page 21 for calculation of trip current rating.
Square D Thermal Unit Selection - pioneerbreaker.com
Example: A motor with a full load current of 12 amps controlled by an 8536SCG3 would require B22 thermal units for standard trip applications and SB19.5 thermal units for slow trip applications. The SB is selected by multiplying 12 amps times 93% for 11.16 amps and using this value to …
Selecting Thermal Units - 9065CT9701 Overload Relays and Thermal …
Table 17 Type A thermal units for full-load currents lower than those listed in this table are available. For complete information, consult Customer Care Center at 1-888-778-2733. This device will accept Type SB slow trip (Class 30) thermal units. For selection, see Selecting Slow Trip Thermal Units.
Square D heaters, sizing | Information by Electrical Professionals …
Dec 14, 2008 · I took a look at the Square D overload chart and went cross eyed. I have a 3/4 HP motor. Name plate 1.6 A at 440 V, 3 phase. Standard squirrel cage with internal thermal protection. The existing heaters are tripping 1 hour into operation of a room heater. The controller is mounted about 4 feet to the left at same level.
overload relay thermal units For continuous-rated motors having service factors of 1.15 to 1.25, select thermal units directly from table using 100% of full-load current (FLC) shown on motor nameplate.
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