HFD63B110 - 110Amp Circuit Breaker

HFD63B110 - 110Amp Circuit Breaker

When you’re replacing a circuit breaker, the catalog number and electrical ratings matter just as much as the amp rating. The Siemens HFD63B110 is a 110A, 3-pole molded case circuit breaker from the SENTRON FD-frame family, designed for compatible low-voltage electrical distribution equipment. It has a 600VAC maximum voltage rating and uses a thermal-magnetic trip unit for overload and short-circuit protection.

Key Features and Benefits

• 110A, 3-pole configuration: Designed for compatible three-pole electrical distribution applications requiring a 110-amp breaker.
• FD frame: Maintains the physical format required by equipment designed around this breaker frame.
• Thermal-magnetic protection: Provides both overload and short-circuit protection without unnecessary complexity.
• 600VAC rating: Suitable for compatible systems operating within the breaker’s published voltage limits.
• Load-side lugs: TA1FD350A lugs provide connections on both sides of the breaker.
• Broad conductor range: Accommodates copper and aluminum conductors within the specified wire ranges.

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: HFD63B110
  
• Product Type: Molded Case Circuit Breaker
  
• Series: SENTRON
  
• Frame: FD
  
• Product Family: HFD6
  
• Rated Current: 110A
  
• Number of Poles: 3
  
• Maximum Voltage: 600VAC
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating at 600V: 25 kAIC
  
• Interrupting Rating at 480V: 65 kAIC
  
• Standard Temperature Rating: 40°C
  
• Lug Type: TA1FD350A
  
• Lug Position: Load side
  
• Copper Wire Range: 6 AWG–350 kcmil
  
• Aluminum Wire Range: 4 AWG–350 kcmil
  
• Dimensions (W x H x D):
  • 4.5 x 9.5 x 4 in.
• Net Weight: 9.48 lb
  
• UPC: 783643211803
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HFD63B110 circuit breaker meets UL 489 and IEC 60947-2 standards, important specifications to consider when checking the breaker against the requirements of an existing electrical installation. For replacement applications, certification is only part of the picture. The breaker’s catalog number, frame, voltage, amperage, pole configuration, interrupting ratings, connections, and physical dimensions should all be checked against the equipment requirements.

Where It Works Best

The Siemens HFD63B110 110A circuit breaker is best suited to commercial and industrial electrical distribution equipment, specifically a three-pole FD-frame molded case breaker with matching ratings. It can be a practical choice for maintenance work and form, fit, and functional replacement in compatible existing systems.