Reliable Power Protection for Heavy Electrical Systems
The Tomzn AC Circuit Breaker 4P 125A delivers strong protection against overloads, short circuits, and electrical faults in three-phase systems. Designed for 400V applications, this breaker ensures stable performance in demanding environments such as solar plants, factories, and commercial installations.
Moreover, its four-pole design protects all phases and neutral simultaneously, improving safety and system reliability. As a result, electricians and engineers prefer Tomzn breakers for critical power protection where consistency and durability matter.
🛡️ Key Features & Benefits
✅ Rated current: 125 Amp
✅ Voltage rating: AC 400V
✅ Four-pole protection (3 Phase + Neutral)
✅ Fast tripping response for fault protection
✅ High short-circuit breaking capacity
✅ Strong flame-retardant housing
✅ Compact DIN rail mounting design
✅ Long mechanical and electrical life
✅ Low heat generation during operation
✅ Certified safety standards
🏭 Applications
Ideal for use in:
⚡ Solar inverter AC protection panels
🏭 Industrial distribution boards
🏢 Commercial buildings and plazas
🚜 Generator and ATS panels
🏗️ Motor control panels
🔋 Battery energy storage systems
📏 Technical Specifications
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Brand: Tomzn
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Product Type: AC Circuit Breaker
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Poles: 4P (Three Phase + Neutral)
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Rated Current: 125A
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Rated Voltage: AC 400V
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Frequency: 50/60Hz
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Breaking Capacity: High
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Mounting: DIN Rail
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Housing Material: Fire-retardant plastic
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Operating Temperature: -25°C to +55°C
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Compliance: IEC Standards
🛠️ Installation & Supply Support
SMS Engineering supplies genuine Tomzn breakers with technical support for sizing, panel integration, and bulk project supply. Whether you are building solar plants, upgrading LT panels, or expanding industrial power networks, our team ensures reliable solutions.
Related products:
🔗 https://www.smsengs.com/product/lt-panel-low-tension-panel/
🔗 https://www.smsengs.com/product/hybrid-solar-protection-box/
🔗 https://www.smsengs.com/product/ss-distribution-box/
Learn more about circuit breakers:
🌐 https://en.wikipedia.org/wiki/Circuit_breaker
