Square D B45.0 Thermal Unit Class 20 (Pack of 6)

Product Description

Square D B45.0 is a melting-alloy thermal unit designed to protect motors, controllers, and branch-circuit conductors from prolonged motor over-currents, including locked rotor currents. It uses a one-piece construction with an internal heater winding and a melting solder element to actuate a trip, and is specified for Class 20 trip characteristics with a manual reset.

• Class 20 melting-alloy thermal element; one-piece construction with internal heater winding; trips in 20 seconds or less on overload.
• Motor full load coverage and mounting: 51 to 61.7 A per thermal unit; plug-in mounting; fits NEMA sizes 1, 2, M1, M1P.
• Electrical and compliance: rated to 600 VAC/VDC maximum; manual reset; CE certified.

Product Highlights

Melting-alloy Class 20 thermal unit for motor overload protection with plug-in mounting and 51–61.7 A FLA coverage.

Product Information

Standard Information

• Brand: SQUARE D
• Manufacturer Part Number: B45.0
• Country of Origin: Mexico

Technical Specifications

• Brand: Square D
• Manufacturer Part Number: B45.0
• Product Type: Thermal unit / Overload heater element
• Trip Class: Class 20
• Trip Time: Trips in 20 seconds or less on overload
• Construction: One-piece thermal unit with internal heater winding
• Protection Type: Melting alloy
• Reset Type: Manual
• Mounting Type: Plug-in
• Motor Full Load Current (per thermal unit): 51 to 61.7 A
• Motor Full Load Current (1 TU): 29.3 to 33.0 A
• Motor Full Load Current (3 TU): 24.3 to 26.0 A
• Size 1 Full Load Amperage Range: 22.00 to 24.40 A
• NEMA Sizes: 1, 2, M1, M1P
• Voltage Rating: Up to 600 VAC or VDC
• Poles: 1
• For Use With: Thermal overload relays; magnetic motor starters; motor controls
• Certifications: CE
• Country of Origin: Mexico
• UPC: 785901587606
• GTIN: 00785901587606