Megger DDA-1600 Circuit Breaker Test Set

Megger DDA-1600 Overview

The Megger DDA-1600 is a high-current circuit breaker test set designed to test low-voltage power circuit breakers up to 1600 A frame size by primary injection. By passing a high current directly through the breaker, it confirms that the breaker trips correctly and within its rated time — an essential check for ensuring protective devices will operate safely. Beyond breaker testing it can also verify current-transformer ratios and test thermal and magnetic motor-overload relays.

The DDA-1600 delivers 1,600 A continuously, up to 19,200 A to air-frame breakers through stabs and up to 14,400 A to moulded-case breakers via 5 ft cables. It uses the DDA-1 digital data acquisition system with DSP technology for precise SCR control, eliminating closing-time errors and allowing initiation at any point within 90° of the zero crossover. Variable pulse-time and firing-angle control, pulsed and maintained operating modes and NEMA AB-4 compliance make it a versatile, accurate test set, supplied as three modular, portable units for easy transport.

Who the Megger DDA-1600 is for

The Megger DDA-1600 is for industrial, utility and testing-service teams who primary-inject low-voltage power circuit breakers rated to 1600 A frame size. It suits workshops that also verify CT ratios and thermal/magnetic motor-overload relays, and that need a modular set they can move as three compact units rather than one large tank.

MME is an authorized Megger representative in the UAE. Browse our circuit breaker testers and the Megger range. For higher-current primary injection, compare the Megger ODEN AT or the Megger SPI500. For breaker timing and travel analysis, see the Megger TM1700.

Megger DDA-1600 Key Features

What the Megger DDA-1600 brings to LV breaker testing:

• Primary-injection test set for LV power circuit breakers up to 1600 A frame size.
• 1,600 A continuous; up to 19,200 A (air-frame) or 14,400 A (moulded-case).
• DDA-1 digital data acquisition with DSP for precise SCR control.
• Initiation at any point within 90° of zero crossover; no closing-time errors.
• Variable pulse-time and firing-angle control; pulsed and maintained modes.
• Also tests CT ratios and thermal/magnetic overload relays.
• NEMA AB-4 compliant; three modular, portable units.

Megger DDA-1600 Applications

Where crews use the Megger DDA-1600:

• Primary-injection testing of low-voltage power circuit breakers.
• Verifying current-transformer ratios.
• Testing thermal and magnetic motor-overload relays.
• Industrial, utility and service-company breaker maintenance.

What comes with the Megger DDA-1600

What Megger supplies with a DDA-1600 set:

• DDA-1600 controller, power and output modules.
• Output cables and stabs.
• Connection leads and user documentation.

Exact contents may vary by order; contact MME to confirm your configuration.

Megger DDA-1600 FAQ

What breaker shops ask about the DDA-1600:

• Is it only for air-frame breakers? No. Megger lists LV power breakers to 1600 A frame, with higher momentary current through stabs on air-frame units and cable connection for moulded-case breakers.
• Why three modules? The controller, power and output modules split weight for transport and reconnect with interconnect cables on site.
• Does it replace a relay test set? No. It is a high-current primary-injection source. Use a relay tester such as SVERKER or SMRT for secondary injection of protection relays.
• What standard does it follow? Megger states the design complies with NEMA AB-4 guidelines for testing LV power circuit breakers.

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is an authorized Megger representative across the UAE and the wider Gulf region. We offer competitive pricing, expert application support and reliable after-sales service to keep your circuit breaker testing programme running smoothly.

Download the Megger DDA-1600 datasheet