Schneider 18829 Acti9 NG125L 4P 80A C-Curve 50kA MCB

Overview

The Schneider Electric 18829 is an Acti9 NG125L miniature circuit breaker (MCB), 4-pole, 80 A, C-curve, with a 50 kA breaking capacity at 380...415 V AC according to EN/IEC 60947-2. It protects distribution circuits against overload and short-circuit and provides isolation. This product is discontinued by Schneider Electric.

Key Specifications

• Range: Acti9 NG125 (device short name: NG125L)
• Type: Miniature circuit breaker, thermal-magnetic
• Poles: 4P, 4 protected poles, neutral on the left
• Rated current [In]: 80 A at 40 °C
• Trip curve: C (magnetic trip 8 x In)
• Network: AC and DC
• Breaking capacity (Icu, EN/IEC 60947-2): 100 kA @ 220...240 V AC, 50 kA @ 380...415 V AC, 40 kA @ 440 V AC, 15 kA @ 500 V AC, 36 kA @ ≤500 V DC
• Service breaking capacity (Ics): 37.5 kA @ 380...415 V AC (75% of Icu)
• Rated insulation voltage [Ui]: 690 V AC
• Rated impulse withstand [Uimp]: 8 kV
• Utilisation category: A; suitable for isolation per IEC 60947-2
• Mounting: clip-on, 35 mm symmetrical DIN rail, 12 x 9 mm pitches
• Terminals: tunnel-type, 16...70 mm² rigid / 10...50 mm² flexible; 6 N.m tightening torque; 20 mm stripping
• Mechanical / electrical durability: 20 000 / 5 000 cycles
• Padlockable (integrated)
• IP20 / IK05; pollution degree 3; overvoltage category IV
• Operating temperature: -30...70 °C
• Dimensions: 103 x 108 x 81 mm (H x W x D); 0.96 kg
• Warranty: 18 months

Typical Applications

• Final and sub-distribution circuit protection
• Industrial and tertiary distribution boards
• DC applications up to 500 V (e.g. battery and PV string protection within ratings)

Compliance

EN/IEC 60947-2.

Note: This product has been discontinued by the manufacturer. Stock is limited to remaining inventory; no further production is planned.