Square D B28.0 thermal unit

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

• Brand: Square D
• Manufacturer Part Number: B28.0
• Country of Origin: Mexico

Technical Specifications

• Type: THERMAL - MELTING ALLOY THERMAL UNIT
• Brand: Square D
• Sub Brand: SCHNEIDER ELECTRIC
• Reset Type: MANUAL
• Applications: FOR USE IN MELTING ALLOY THERMAL OVERLOAD RELAYS
• Catalog Number: B28.0
• Manufacturer: Schneider Electric
• Country of Origin: Mexico
• Made in USA: No
• UPC: 785901587569
• GTIN: 00785901587569
• IGCC: 5364
• Family group: MOTOR CONTROL
• WES Product code: 2440850114
• Motor Tripping Class: 20
• Thermal Overload Type: Melting alloy
• UL Listed: Yes
• CSA Certified: Yes
• Application: Protect motors, controllers, and branch-circuit conductors
• Motor FLA: 30.8 to 34.9 Ampere (1 Thermal Unit)
• NEMA Size: 1, M1, M1P
• Mounting: Plug-In
• Used On: Overload Relay
• Series: B
• Amperage: 16.7-18
• Mounting Type: Plug-On
• Protection: Thermal
• For Use With: Thermal Overload Relays, Magnetic Motor Starters and Motor Controls
• Nema Size: 1
• Mpn: B28.0
• Full Load Current: 16.7 to 18 A
• UNSPSC: 39122330