Eaton NZM Series NZMN1-A25 — NZM1‑Frame 3‑Pole Molded Case Circuit Breaker (MCCB), 25A, 690 VAC / 500 VDC, Thermal‑Magnetic T268, 50 kAIC, Front Frame Clamp, Rocker Lever

Product overview The Eaton NZMN1-A25 is a complete NZM1‑frame molded case circuit breaker (MCCB) designed for distribution circuit protection in industrial and commercial systems. This three‑pole, thermal‑magnetic device provides reliable overload and short‑circuit protection with a compact footprint and front frame clamp connection for straightforward installation and replacement.

Key specifications

• Manufacturer: Eaton
• Series / Frame: NZM Series — NZM1 frame (NZMN1 family)
• Catalog number / Part no.: NZMN1-A25
• Product type: Molded Case Circuit Breaker (MCCB) — Distribution circuit protection
• Poles: 3‑pole
• Rated current: 25 A
• Trip type / trip unit: Thermal‑magnetic, T268 designation
• Overload / setting range: 20–25 A (adjustable long‑time / overload range)
• Trip rating (short‑time/instantaneous reference): listed 350 A (manufacturer data entry) — verify if used as short‑time/instantaneous setting per Eaton product literature for coordination purposes
• Voltage rating: 690 VAC and 500 VDC (rated for AC and DC systems as specified)
• Short‑circuit breaking capacity / Interrupt rating: 50 kAIC
• Connection method: Front frame clamp (line/load)
• Operator: Rocker lever (front‑operated)
• Dimensions (W x H x D): 3.54 in x 5.71 in x 2.68 in (approx.)
• Weight: 3.5 lb
• Certifications: UL Listed
• Typical applications: Low‑voltage distribution, panelboards, motor feeders and branch circuit protection where compact NZM1 frame and up to 50 kA interrupting capacity are required

Features & benefits

• Compact NZM1 frame for space‑efficient installations and retrofit compatibility with Eaton NZM accessory ecosystem.
• Dual voltage capability (690 VAC / 500 VDC) supports a range of AC and DC applications.
• 50 kAIC interrupting capacity provides robust protection against high fault currents.
• Thermal‑magnetic trip with adjustable overload range (20–25 A) enables coordinated protection and reliable clearing of overloads and short circuits.
• Front frame clamp connection and rocker lever facilitate quick installation and operation.

Installation & safety notes

• Confirm system voltage and coordination requirements before installation; utilize Eaton time‑current curves and coordination guides for setting and selectivity.
• Verify interpretation of the listed "350 A trip rating" with Eaton technical documentation if it will be used for short‑time/instantaneous or accessory settings. Remove ambiguity by consulting Eaton product datasheet when required.
• Follow local electrical codes and Eaton installation instructions for mounting, wiring torque values and protective coordination.

Documentation & support

• For full technical datasheets, trip curves, accessory compatibility (auxiliary contacts, shunt trips, interlocks), and installation instructions, refer to Eaton NZM series product literature or contact Eaton technical support.