Product Overview:
The AEG C916-100 is a motor protection circuit breaker (MPCB) designed to protect three-phase AC motors from overload, short-circuit, and phase-failure conditions. It combines the functions of a circuit breaker, overload relay, and phase-failure monitor in a single device, eliminating the need for separate components.

Technical Specifications:

• Rated Current (Ir): 100 A
• Poles: 3P (Three Pole)
• Rated Voltage (Ue): 690V AC (50/60 Hz)
• Rated Short-Circuit Breaking Capacity (Icu): 50 kA at 690V
• Rated Ultimate Breaking Capacity (Icu): 50 kA
• Rated Operational Breaking Capacity (Ics): 100% of Icu (50 kA)
• Trip Current Range (Ir): 80 A – 100 A (adjustable via dial)
• Trip Class: 10 (trips within 10 seconds at 7.2× Ir)
• Phase-Failure Protection: Built-in, adjustable 20%–40% voltage unbalance
• Mechanical Life: 10,000 operations
• Electrical Life: 5,000 operations at rated current
• Dimensions (W×H×D): 106 mm × 138 mm × 110 mm
• Mounting: DIN rail (35 mm) or screw mounting
• Weight: Approximately 1.8 kg

Material Composition:

• Housing: Glass-fiber reinforced polyamide (PA66-GF30), flame-retardant UL94 V-0
• Contacts: Silver-tungsten alloy (AgW10) for high breaking capacity
• Arc Chute: 12 stainless steel de-ion plates per pole
• Trip Unit: Electronic-thermal hybrid with microprocessor
• Terminals: Copper alloy, screw terminal, max 70 mm² conductor

Structural Features:

• Front-mounted rotary dial for current setting (80–100 A)
• LED indicator: green = powered, yellow = pre-alarm, red = tripped
• Test button for functional verification of trip mechanism
• Screw-clamp terminals for ring or fork connectors
• IP20 front panel protection (must be installed in enclosure for IP rating)

Working Principle:

• Overload Protection: Thermal-magnetic trip unit monitors current continuously. When current exceeds set Ir for duration defined by trip class 10 curve, the bimetallic element triggers release.
• Short-Circuit Protection: Electromagnetic instantaneous trip activates at 10× Ir or above, opening all three poles within 10 ms.
• Phase-Failure Protection: Built-in voltage monitor detects loss of any phase or voltage drop below 60% of nominal. Trips within 0.5 seconds to prevent single-phasing motor damage.
• Arc Extinction: 12 de-ion plates per pole split and cool the arc, enabling 50 kA safe interruption.

Key Advantages:

• All-in-one solution — replaces MCB + overload relay + phase-failure relay (saves panel space and wiring cost)
• 50 kA breaking capacity suitable for industrial distribution boards close to transformer
• Adjustable trip range (80–100 A) covers multiple motor sizes with one device
• Trip class 10 perfectly matched to motor thermal withstand curves (IEC 60947-4-1)

Applicable Industries:

• Industrial motor control centers (MCC)
• Pump station motor protection
• Compressor motor protection
• Conveyor drive protection
• HVAC chiller motor protection

Installation Requirements:

• Mount on 35 mm DIN rail or panel-mount with 4×M6 screws
• Connect L1/L2/L3 motor lines to load terminals (bottom)
• Connect supply to line terminals (top)
• Torque terminals to 6 Nm for 70 mm² conductors
• Coordinate with upstream 125 A or 160 A MCCB for selective discrimination

Usage Precautions:

• Set trip dial to exact motor FLA (Full Load Amperage) — do not oversize
• Test trip function monthly using test button
• After any short-circuit trip, replace the unit — internal arc damage is not visible
• Ensure enclosure provides at least IP54 protection if installed in wet environment