✅ 33671 – Schneider Electric MN Undervoltage Release (200–250 V AC/DC, 50/60 Hz)
The Schneider Electric 33671 is an MN-type undervoltage release designed for Compact NS and NSX molded case circuit breakers (MCCBs). It ensures that the breaker opens automatically when the control voltage drops below a set threshold, providing critical protection for equipment against voltage loss or undervoltage conditions. The unit operates with both AC and DC voltages in the 200–250 V range, compatible with 50/60 Hz systems.
🔧 Technical Specifications:
Specification Details
Part Number 33671
Brand Schneider Electric
Product Type Undervoltage Release (MN)
Function Automatic breaker opening on undervoltage
Control Voltage Range 200…250 V AC/DC
Frequency 50/60 Hz
Compatibility Compact NS / NSX MCCBs
Mounting Type Plug-in module
Trip Function Activation Automatically when voltage drops
Standards Compliance IEC 60947-2
Typical Use Case Protection against voltage drops and interruptions
🌟 Key Features:
✅ Failsafe Protection: Automatically trips breaker during voltage loss.
✅ Wide Voltage Operation: Compatible with both AC and DC supplies from 200 to 250 V.
✅ Reliable Mechanism: Prevents unsafe operation during undervoltage.
✅ Quick Installation: Integrated seamlessly into NS and NSX circuit breakers.
✅ Compact and Durable: Designed for industrial and infrastructure applications.
🧰 Applications:
Emergency stop circuits
Machinery safety shutdowns
Voltage-sensitive equipment protection
Electrical system interlocks and automation panels