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MCCB DRX 125 Thermal Magnetic Circuit Breaker | 20 kA Breaking Capacity | 3-Pole Design | @Each of 1 | by Legrand

BRAND: Legrand
SKU: 027221
$270.00 List price: $336.50
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MCCB DRX 125 Thermal Magnetic Circuit Breaker offers reliable overload and short-circuit protection with a breaking capacity of 20 kA at 415 V~. Designed for industrial and commercial applications, this 3-pole circuit breaker is suitable for DIN rail mounting and features a switched-off indicator and integrated under voltage release, ensuring enhanced electrical safety and compliance with IEC standards.

Product Name/Title: MCCB DRX 125 Thermal Magnetic Circuit Breaker | 20 kA Breaking Capacity | 3-Pole Design | @Each of 1 | by Legrand

Brand: Legrand

SKU: 027221

Alternatively Known As: Moulded Case Circuit Breaker, MCCB 125A, Thermal Magnetic Circuit Breaker, Legrand DRX 125 MCCB

Technical Specifications
  • Rated permanent current (Iu): 125 A
  • Rated voltage: 110-550 V
  • Rated short-circuit breaking capacity (Icu) at 400 V, 50 Hz: 20 kA
  • Overload release current setting: 125-125 A
  • Adjustment range short-term delayed short-circuit release: 1250-1250 A
  • Adjustment range undelayed short-circuit release: 1250-1250 A
  • Device construction: Built-in fixed built-in technique
  • Integrated earth fault protection: No
  • Type of electrical connection of main circuit: Screw connection
  • Suitable for DIN rail (top hat rail) mounting: Yes
  • Number of auxiliary contacts as normally closed contact: 1
  • Number of auxiliary contacts as change-over contact: 1
  • With switched-off indicator: Yes
  • With integrated under voltage release: Yes
  • Number of poles: 3
  • Position of connection for main current circuit: Front side
  • Type of control element: Wing knob
  • Complete device with protection unit: Yes
  • Motor drive integrated: No
  • Motor drive optional: No
  • Degree of protection (IP): IP30
  • Dimensions (H x L x W): 110mm x 75mm x 90mm
  • Weight: 2.5 kg
Key Features
  • Thermal magnetic trip unit for overload and short-circuit protection
  • Breaking capacity (Icu) of 20 kA at 415 V~
  • Rated current of 125 A
  • 3-pole design
  • Suitable for DIN rail (top hat rail) mounting
  • Screw connection for main circuit
  • Includes M5 terminals for currents ≤ 50 A and M8 terminals for currents > 50 A
  • Fixed thermal and magnetic release
  • With switched-off indicator and integrated under voltage release
  • Degree of protection IP30
  • Conforms to IEC 60947-2 and NEMA standards
Professional Installation Requirements
  • Installation must be performed by a qualified electrician to ensure compliance with electrical safety standards and proper integration into the electrical system.
Applications
  • Protection and control of low-voltage electrical circuits in industrial and commercial switchboards
  • Switchboards and power cabinets
  • Circuit breaker and moulded case switch applications
Standards & Compliance
  • AS/NZS 60950 – Safety of IT and Communication Equipment
Environmental Benefits
  • Enhances electrical safety reducing risk of fire and equipment damage
  • Supports energy efficiency by preventing electrical faults and overloads
Warranty Information

Standard manufacturer warranty applies, typically 1-2 years against manufacturing defects.

Available Now

The Legrand MCCB DRX 125 Thermal Magnetic Circuit Breaker is available for immediate purchase, ideal for industrial and commercial electrical protection applications.