CBI QA17C Earth Leakage Switch Disconnector – 63 A, 30 mA, No Overload Protection Dual Mount

Ensure the highest standard of personal safety against electrical shock and fire hazards with the CBI QA17C Earth Leakage Switch Disconnector. Engineered with CBI's renowned hydraulic-magnetic technology, this device provides reliable, high-sensitivity 30mA earth leakage protection, crucial for residential and commercial installations.

Unlike a traditional circuit breaker, the "C" designation means this unit functions purely as a protective switch, providing earth leakage safety without overload protection. This is ideal when the circuit's overload protection is handled by a separate upstream device. It features a compact, single-module design (26 mm wide) and a versatile Dual Mount system, allowing for easy installation on both DIN and CBi mini rails.

 

Why You Will Love It

• Safety First: Provides high-sensitivity 30mA earth leakage protection against electrical shock and fire hazards.

• Temperature Independent: Utilizes reliable hydraulic-magnetic technology, ensuring 100% rating capability and precision tripping that is completely independent of ambient temperature.

• Flexible Installation: The Dual Mount design (DIN & CBi mini rail) ensures it fits seamlessly into almost any distribution board.

• Instant Reset: Can be switched on immediately after tripping without needing a cool-down period.

 

Key Features

• Brand: CBI (Circuit Breaker Industries)

• Model: QA17C (Non-Overload Version)

• Function: Earth Leakage Protection Device (Switch Disconnector)

• Current Rating: 63 Amperes (63A)

• Sensitivity: 30 milliamperes (30mA) - Type A

• Poles: 2 Pole (Single pole plus switched neutral, 1P+N)

• Mounting: Dual Mount (Fits DIN & CBi mini rail)

• Technology: Hydraulic-magnetic

• Compact Size: 26 mm wide module

 

Ideal For

• Residential and Commercial distribution boards requiring high-sensitivity earth leakage protection.

• Circuits where the main short-circuit protection is provided by another upstream device.

• Specialized equipment protection, including Telecom/Datacom equipment, Lighting control, UPS equipment, and Alternative energy systems.

 

What's in the Box

• 1 x CBI QA17C Earth Leakage Switch Disconnector (63A, 30mA, No Overload)

• Note: Mounting screws are typically included or standard DB board accessories are used.

 

Top 3 FAQs

1. What is the difference between the QA17C and the QA17A? The QA17C (suffix C) is a Switch Disconnector and provides Earth Leakage Protection ONLY (no overload protection). The QA17A (suffix A) is a Circuit Breaker and provides BOTH Earth Leakage Protection AND Overload Protection.

2. Why does this unit have 'No Overload Protection'? The "no overload protection" design means this device's primary function is to protect people from electrical shock (earth fault). It is typically installed in series with a separate Miniature Circuit Breaker (MCB) or main switch that handles the short-circuit and overload protection for the circuit.

3. What does the 30mA sensitivity mean? The 30mA (milliamperes) sensitivity is the standard requirement for life safety. It means the device will trip and cut power instantly if it detects a leakage current to earth of 30mA or greater, offering protection from severe or fatal electrical shock.