The Regulator,engine Generator, cataloged under National Stock Number 2920-00-033-5555, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Prestolite Electric Inc. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2920-00-033-5555 |
| Primary Part Number | TC4303D |
| Item Name | Regulator,engine Generator |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Manufacturer | Prestolite Electric Inc |
| Status | ACTIVE |
| Field Relay Unit | NOT INCLUDED |
| Angle Between Slotted Holes and Open Slots in Deg | 80.0 |
| Terminal Quantity | 2 |
| Terminal Type | SCREW |
| Current Regulator Unit Type | WIRE WOUND COIL INTEGRAL W/VOLTAGE REGULATOR UNIT |
| Center to Center Distance Between Slots Along Width | 0.656 INCHES NOMINAL IN |
| Mounting Slot Length | 0.320 INCHES NOMINAL IN |
| Shock Mount | NOT PROVIDED |
| Radio Interference Shielding | NOT PROVIDED |
| Cut-in Voltage Rating | 13.8 MAXIMUM AND 12.8 MINIMUM |
| Mounting Style | THREE SLOTTED HOLES, THREE OPEN SLOTS ON A RADIUS |
| Voltage Regulator Unit Type | WIRE WOUND COIL |
| Output Voltage Rating in Volts | 14.0 MINIMUM AND 14.2 MAXIMUM |
| System Voltage Rating | 12.0 |
| Voltage Regulator Unit Quantity | 1 |
| Cutout Current Rating in Amps | 0.5 MINIMUM AND 2.0 MAXIMUM |
| Terminal Encasement | NOT ENCASED |
| Circuit Control Device Type | CIRCUIT BREAKER |
| Open Slot Width | 0.203 INCHES NOMINAL IN |
| System Ground Polarity | NEGATIVE OR POSITIVE |
| Reverse Current Overload Circuit Breaker | NOT INCLUDED |
| Mounting Facility Radius | 2.220 INCHES NOMINAL IN |
| Mounting Slot Width | 0.203 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| TC4303D PRIMARY | Prestolite Electric Inc (USA) |
| Reference | Meaning |
|---|---|
| TC4303D | 5/9 Secondary reference Prestolite Electric Inc |
NSN 2920-00-033-5555 is a Regulator,engine Generator, manufactured by Prestolite Electric Inc, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
NSN 2920-00-033-5555 has 1 manufacturer part number on file: TC4303D (Prestolite Electric Inc).
Key specifications for TC4303D: Field Relay Unit: NOT INCLUDED; Angle Between Slotted Holes and Open Slots in Deg: 80.0; Terminal Quantity: 2; Terminal Type: SCREW. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.