The 3NA3824 is a 3-pole molded case circuit breaker from Siemens' 3NA3 series, rated at 250 A for 690 V AC (deratable to 1000 V AC) and 250 V DC. It features a 50 kA breaking capacity at 400 V AC, with thermal-magnetic trip units for adjustable overcurrent protection (Ir/Is settings).

Key Specifications
Electrical Parameters:

Input Voltage: 110-240V AC (50/60Hz) ±15%

Output: 24V DC ±1% regulated

Power Rating: 120W continuous

Efficiency: >92% (typical load)

Inrush Current: <25A (at 230V AC)

Protection Features:

Short-circuit protection (auto-recovery)

Overvoltage clamp (30V max)

Overtemperature shutdown

Redundant diode protection

Mechanical Design
Compact dimensions: 150 x 75 x 120mm (WxHxD)

Conformal coated PCB for moisture resistance

DIN-rail mounting (TS35/7.5/15)

Natural convection cooling (no fan)

Vibration resistant: 5g (10-150Hz)

Certifications & Compliance
Safety: UL 508/EN 61800-5-1

EMC: EN 61000-6-2/6-4

Marine: DNV-GL certified (optional)

Operating Altitude: 2000m max

The Honeywell FC-PSU-UNI2450U V1.0 Power Supply Module offers unparalleled reliability and efficiency for industrial control systems, providing stable power supply under extreme conditions.