Stop Faults Before They Shut Down Your Project
Electrical faults can stall projects, damage equipment, and create costly downtime. The Koten (TQD) Molded Case Circuit Breaker provides dependable circuit protection that keeps power systems stable, safe, and operational.
Reliable Protection for High-Demand Electrical Systems
Electrical systems fail when faults spread across circuits and protection devices respond too slowly. The Koten (TQD) Molded Case Circuit Breaker solves this problem with engineered protection that isolates faults quickly and keeps systems running safely. With thermal magnetic trip protection, the breaker detects both gradual overloads and sudden short circuits, which protects sensitive equipment from overheating or catastrophic failure. This dual protection helps distribution panels and industrial circuits operate without unexpected shutdowns. A quick make quick break mechanism separates contacts rapidly during faults, reducing electrical arcing and protecting internal components. Faster switching also improves durability and extends breaker service life, making it suitable for demanding electrical installations where reliability is critical.
A trip free safety mechanism automatically disconnects power during a fault even if the handle is forced in the ON position. This safety design protects both personnel and connected equipment while supporting compliance with professional electrical standards. The breaker also features a high interrupting capacity of up to 10 kA at 240V, which allows it to safely stop large fault currents. Industrial panels, HVAC systems, and heavy equipment circuits remain protected even during extreme electrical conditions. Durable molded case construction provides strong insulation, heat resistance, and mechanical protection. An integrated arc extinguishing system controls electrical arcs during interruptions, allowing the breaker to operate safely in harsh environments and high demand power systems.
Key Benefits
- Reliable Dual Fault Protection: Thermal magnetic trip system protects circuits from overload and short circuit conditions.
- Reduced Equipment Damage: Quick make quick break mechanism minimizes electrical arcing during faults.
- Enhanced Safety Protection: Trip free mechanism disconnects power even when the breaker handle is held ON.
- High Fault Current Protection: Interrupting capacity up to 10 kA safely handles large short circuit currents.
- Long Service Life: Durable molded case construction resists heat, mechanical stress, and electrical wear.
- Improved System Reliability: Arc extinguishing system prevents internal damage during high current interruptions.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Molded Case Circuit Breaker |
| Series | Koten TQD |
| Protection Type | Thermal magnetic trip |
| Interrupting Capacity | Up to 10 kA at 240V |
| Voltage Rating | Up to 240V AC |
| Housing Material | High strength insulating molded case |
| Arc Control | Internal arc extinguishing system |
| Typical Applications | Distribution panels, HVAC systems, industrial machinery |
| Compatibility | Residential, commercial, and industrial electrical systems |
FAQ
What is a molded case circuit breaker used for?
– A molded case circuit breaker protects electrical circuits from overloads and short circuits. It automatically interrupts power when current exceeds safe limits. This protection prevents equipment damage, electrical fires, and system downtime. MCCBs are commonly used in commercial buildings, industrial facilities, and power distribution panels.
Is the Koten TQD breaker suitable for HVAC systems?
– Yes. Many TQD molded case circuit breakers support HVAC and refrigeration applications. The breaker can protect circuits that supply air conditioning units, compressors, and other HVAC equipment. Its thermal magnetic protection responds quickly to overload conditions caused by motor driven systems.
How does thermal magnetic trip protection work?
– Thermal magnetic trip protection uses two mechanisms. The thermal element reacts to prolonged overload currents by bending a metal strip that triggers the trip. The magnetic element responds instantly to high fault currents such as short circuits. Together they provide fast and reliable circuit protection.
