PB3700 - 700 Amp Circuit Breaker

PB3700 Thermal Magnetic Circuit Breaker

When your electrical setup demands dependable protection for heavy-duty systems, the PB3700 Thermal Magnetic Circuit Breaker steps up. With a 700‑amp, 3‑pole design and rear-connected configuration, it’s made for seamless integration into commercial and industrial environments—even in tight spaces or existing panels. Rated for 40 °C, this breaker offers consistent performance without needing a complete overhaul of your system.

Key Features and Benefits

• High Current Handling – Rated at 700 A, the PB3700 manages significant loads with confidence, helping you keep equipment running safely.
• Thermal + Magnetic Trip Technology – Dual-action protection guards against overloads and short circuits effectively, helping prolong the life of your electrical gear.
• Rear-Connected Design – Ideal for retrofits and maintenance, this configuration lets you slide the breaker into place without reworking your panel layout.
• Everyday Reliability – Built to perform consistently under challenging conditions, this breaker keeps interruptions to a minimum and peace of mind high.

Technical Specifications

• Ship Weight: ~170 lb
  
• Dimensions:
  • Width: 12.06 inches
  • Length: 22.13 inches
  • Depth: 9.06 inches
• Poles: 3
  
• Current Rating: 700 A
  
• A.I.C. (Interrupting Capacity):
  • 100 kA at 600 V AC
  • 100 kA at 480 V AC
  • 125 kA at 240 V AC
• Frame Type: PB
  
• Temperature Rating: 40 °C
  
• Connection Style: Rear-connected
  
• Breaker Type: Thermal magnetic—combining fast-response protection with dependable thermal defense
  

Material Compliance and Certifications

• Crafted with materials that meet or exceed leading industrial standards, the PB3700 undergoes strict quality testing to ensure safety and durability. You’re not just buying a part—you’re investing in a product that’s built to global certification benchmarks, giving you confidence that it’ll keep your system protected today and tomorrow.

Suitability

• This breaker shines when replacing old or worn-out units in existing electrical setups without the expense of full panel redesigns. It’s especially practical in factories, commercial buildings, or infrastructure where uptime matters. If you're focused on keeping systems safe, simple, and dependable, the PB3700 is a smart choice for maintenance-driven upgrades.