The Circuit Breaker, cataloged under National Stock Number 5925-01-323-1612, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Klockner-Moeller Corp. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-323-1612 |
| Primary Part Number | NZM6B-63/ZM6-2.1-12-OBI-CNA |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Klockner-Moeller Corp |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 600.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 6 TERMINAL |
| Actuator Position Designation | AT POLE ONE |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 95.0 MILLIMETERS NOMINAL MM |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 210.0 MILLIMETERS NOMINAL MM |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | UNDERVOLTAGE ALL LOCATIONS |
| Body Width | 252.0 MILLIMETERS NOMINAL MM |
| Body Height | 110.0 MILLIMETERS NOMINAL MM |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 2.1 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 14000.0 AC ALL LOCATIONS |
| Body Length | 280.5 MILLIMETERS NOMINAL MM |
| Manual Actuator Type and Quantity | 1 ROTARY |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 66.0 MILLIMETERS NOMINAL MM |
| Inclosure Protection Type for Which Designed | DUSTPROOF |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 40.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 COMPRESSION |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Boss Height | 16.0 MILLIMETERS NOMINAL MM |
| Trip Release Method | THERMAL-MAGNETIC ALL LOCATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| NZM6B-63/ZM6-2.1-12-OBI-CNA PRIMARY | Klockner-Moeller Corp (USA) |
| Reference | Meaning |
|---|---|
| NZM6B-63/ZM6-2.1-12- | C/1 Advisory reference — outside the item-of-supply concept Klockner-Moeller Corp |
NSN 5925-01-323-1612 is a Circuit Breaker, manufactured by Klockner-Moeller Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-323-1612 has 1 manufacturer part number on file: NZM6B-63/ZM6-2.1-12-OBI-CNA (Klockner-Moeller Corp).
Key specifications for NZM6B-63/ZM6-2.1-12-OBI-CNA: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 6 TERMINAL; Actuator Position Designation: AT POLE ONE. 30 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.