Schneider Electric A9N61502 Acti9 C60H-DC MCB 1P 2A

Technical Overview

Compact 1-pole 2A DC miniature circuit breaker with C curve, featuring 6kA/10kA breaking capacity, VisiTrip/VisiSafe indicators, and DIN rail mounting.

Key Features

Specially engineered for dedicated direct current (DC) distribution and control circuits
Thermal-magnetic protection mechanism utilizing a C-curve tripping characteristic
High short-circuit breaking capacity conforming to industrial standard IEC/EN 60947-2
VisiSafe green indicator strip guarantees physical isolation of the downstream circuit
VisiTrip indicator window allows instant visual identification of fault-tripped circuits
Easy modular mounting on standard 35 mm symmetrical DIN rails
Robust electrical and mechanical endurance ratings suitable for harsh industrial applications

Technical Specification Matrix

Parameter	Value
Poles Description	1P
Protected Poles	1
Rated Current (In)	2 A at 25 °C
Network Type	DC
Tripping Curve	C
Rated Operational Voltage (Ue)	250 V DC
Rated Short-Circuit Breaking Capacity (Icu)	20 kA at 110 V DC, 10 kA at 220 V DC, 6 kA at 250 V DC
Rated Insulation Voltage (Ui)	500 V DC conforming to IEC/EN 60947-2
Rated Impulse Withstand Voltage (Uimp)	6 kV conforming to IEC/EN 60947-2
Contact Position Indicator	Yes (VisiSafe & VisiTrip)
Control Type	Toggle
Mounting Support	35 mm symmetrical DIN rail
IP Rating	IP20 (IP40 inside modular enclosure)
Mechanical Durability	20,000 cycles
Electrical Durability	3,000 cycles (L/R = 2 ms)
Operating Temperature	-25 °C to 70 °C
Physical Weight (kg)	0.13
Dimensions L x W x H (cm)	7.3 x 1.8 x 8.5

Industrial Applications

1. Solar Photovoltaic (PV) Combiner Box Protection

Protects low-current solar string arrays from overcurrents and reverse current flow. Since solar systems generate direct current, standard AC breakers cannot extinguish DC arcs. The A9N61502's specialized 250V DC operational rating and 6 kA breaking capacity make it ideal for protecting fine-gauge solar PV lines.

Problem Solved

Prevents catastrophic fires and thermal damage in PV arrays during localized short-circuit conditions by safely isolating faulted DC strings without sustaining electric arcs.

Solar PV String ProtectionDirect Current ProtectionPV Combiner BoxC Tripping CurveArc Extinguishment

2. Industrial Automation 24V/48V DC Control Loop Safeguarding

Installed inside automated PLC control panels to secure sensitive instrumentation loops, solenoid actuators, and sensor arrays powered by centralized 24V or 48V DC power supplies.

Problem Solved

Eliminates nuisance tripping caused by high transient switch-on currents through its C-curve delay, while ensuring precision 2A overcurrent protection to stop thermal damage in control cables during field-level short circuits.

Industrial AutomationControl Panel DistributionPLC ProtectionTransient Inrush MitigationDIN Rail MCB

3. Telecom Backup & Battery Storage System Monitoring Line Isolation

Secures supplementary control, battery-monitoring, and diagnostic sensor lines in telecommunication shelter power grids and Battery Energy Storage Systems (BESS) rated up to 250V DC.

Problem Solved

Handles critical isolation of sensitive auxiliary circuits from massive high-energy DC battery buses. During battery short-circuits, the breaker safely clears up to 20 kA at 110V DC, preventing heavy battery discharges from destroying monitoring electronics.

Battery Energy Storage SystemsTelecom DC DistributionHigh Breaking CapacityAuxiliary Line IsolationBESS Monitoring Safeguard