Product Description
The Square D B28.0 thermal unit protects motors, controllers, and branch-circuit conductors against excessive heating due to prolonged motor over-currents, including locked rotor currents. These Class 20 thermal units respond to overload current conditions according to trip curves, tripping in 20 seconds or less. It features a one-piece construction and is UL listed and CSA certified.
- Cannot be reset until cooled
- Melting alloy thermal units are available in three designs: standard trip (Class 20) slow trip (Class 30) quick trip (Class 10)
- One-piece thermal unit construction
Product Highlights
Provides overload protection for motors. Calibration is set for a range of motor full load currents. Repeated tripping does not affect the original calibration.
Product Information
Standard Information
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Brand: Square D
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Manufacturer Part Number: B28.0
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Country of Origin: Mexico
Technical Specifications
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Type: THERMAL - MELTING ALLOY THERMAL UNIT
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Brand: Square D
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Sub Brand: SCHNEIDER ELECTRIC
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Reset Type: MANUAL
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Applications: FOR USE IN MELTING ALLOY THERMAL OVERLOAD RELAYS
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Catalog Number: B28.0
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Manufacturer: Schneider Electric
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Country of Origin: Mexico
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Made in USA: No
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UPC: 785901587569
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GTIN: 00785901587569
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IGCC: 5364
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Family group: MOTOR CONTROL
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WES Product code: 2440850114
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Motor Tripping Class: 20
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Thermal Overload Type: Melting alloy
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UL Listed: Yes
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CSA Certified: Yes
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Application: Protect motors, controllers, and branch-circuit conductors
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Motor FLA: 30.8 to 34.9 Ampere (1 Thermal Unit)
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NEMA Size: 1, M1, M1P
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Mounting: Plug-In
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Used On: Overload Relay
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Series: B
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Amperage: 16.7-18
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Mounting Type: Plug-On
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Protection: Thermal
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For Use With: Thermal Overload Relays, Magnetic Motor Starters and Motor Controls
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Nema Size: 1
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Mpn: B28.0
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Full Load Current: 16.7 to 18 A
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UNSPSC: 39122330
