Eaton CHM3DU 32A – Technical Specifications
General Ratings:
Rated Current (Iₙ): 32A (fixed or adjustable, depending on trip unit)

Number of Poles: 3P (3-phase)

Rated Voltage (Uₑ):

400/415V AC (50/60 Hz)

250V DC (DC-rated versions)

Breaking Capacity (Icu/Ics):

Up to 50 kA (at 415V AC, varies by model)

10–25 kA (typical for standard versions)

Tripping Characteristics:
Trip Unit Type: Thermal-magnetic (fixed) or electronic (adjustable, if applicable)

Overload Protection (Ir): Adjustable (e.g., 0.7–1 × Iₙ in electronic versions)

Short-Circuit Protection (Im): Fixed or adjustable (e.g., 5–10 × Iₙ)

Tripping Curve: Similar to IEC 60947-2 standards (e.g., Type B, C, D)

Mechanical & Design:
Mounting: Fixed or plug-in (depends on variant)

Terminals: Screw-type (accepts 10–25 mm² cables)

Enclosure Protection: IP20 (front panel)

Operating Mechanism: Quick-make, quick-break

Environmental & Durability:
Operating Temperature: -25°C to +60°C

Storage Temperature: -40°C to +85°C

Mechanical Life: ≥10,000 cycles (no load)

Electrical Life: ≥5,000 cycles (at rated current)

Standards & Certifications:
Compliance:

IEC/EN 60947-2 (MCCB standard)

UL 489 (for UL-listed versions)

CE, RoHS

Short-Circuit Test Standards: IEC 60947-2

Optional Features (Model-Dependent):
Auxiliary Contacts (OF, SD, UV): For remote signaling

Shunt Trip (MX): Remote tripping capability

Under-Voltage Release (UV): Auto-trip on low voltage