Siemens 14DUB320C FVNR Motor Starter
Specification Comparison — 14DUB320C vs. 14DUB320 Family
| Specification | 14DUB320C (Seed) | 14DUB320D | 14DUB320J | 14DUB320E | Similarity (0–1) |
|---|---|---|---|---|---|
| Control / Drive Type | Motor Starter | Motor Starter | Motor Starter | Motor Starter | 1.0 |
| Current — Output | 27A | 27A | 27A | 27A | 1.0 |
| Motor Type | AC Motor | AC Motor | AC Motor | AC Motor | 1.0 |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount | Chassis Mount | 1.0 |
| Number of Motors | 1 | 1 | 1 | 1 | 1.0 |
| Operating Temperature | 20°C ~ 40°C | 20°C~40°C | 20°C~40°C | 20°C ~ 40°C | 1.0 |
| Encapsulation | Box | Box | Box | Bulk | — |
| RoHS | Non-compliant | Not specified | Non-compliant | Not specified | — |
| Product Status | Active | Active | Active | Active | 1.0 |
The reader must qualify each alternate independently against application requirements. The shared axis across the family is a 27A-output FVNR (full-voltage non-reversing) Size 1 starter for AC motors, chassis-mounted, operating over 20°C–40°C.
Why these are similar:
- 14DUB320D, 14DUB320J — same Box encapsulation and full spec overlap; distinguish only by RoHS notation or stock entry absence.
- 14DUB320E — identical electrical and mechanical ratings; differs in Bulk packaging instead of Box, which affects unit quantity and may alter shelf-life handling.
Siemens 14DUB320C Core Parameters
| Parameter | Value |
|---|---|
| Control / Drive Type | Motor Starter (FVNR) |
| Current — Output | 27A |
| Motor Type | AC Motor |
| Size | SZ1 |
| Current Adjustment Range | 0.75–3.4A |
| Number of Motors | 1 |
| Mounting Type | Chassis Mount |
| Operating Temperature | 20°C ~ 40°C |
| Encapsulation | Box |
| RoHS | Non-compliant |
| Product Status | Active |
The SZ1 designation places this in Siemens' Size 1 envelope, governing physical dimensions and short-circuit coordination ratings typical for branch-circuit motor protection. The 0.75–3.4A adjustable range is the overload relay setting window; the 27A output rating is the contactor current capacity. FVNR topology applies full line voltage to the motor on start; it does not provide reversing or reduced-voltage starting.
Enclosure and Environmental Notes
The 20°C–40°C operating range is narrow and indicates an indoor, climate-controlled environment. No IP rating or enclosure type appears in the record; panel designers should verify that chassis mounting into a suitable enclosure provides adequate environmental protection for the target installation. The non-compliant RoHS status reflects legacy materials in the contactor and overload housing; replacement in new equipment subject to RoHS directives requires an alternative line or a confirmed RoHS-compliant variant.
Family Suffix Differentiation
| MPN | Encapsulation | RoHS | Distinguishing Note |
|---|---|---|---|
| 14DUB320A | Box | Non-compliant | Standard baseline variant |
| 14DUB320C | Box | Non-compliant | Seed unit |
| 14DUB320D | Box | Not specified | Identical to seed; stock entry differs |
| 14DUB320E | Bulk | Not specified | Bulk packaging; may affect MOQ |
| 14DUB320F | Box | Non-compliant | Standard variant |
| 14DUB320G | Box | Not specified | Identical to seed; stock entry differs |
| 14DUB320H | Box | Non-compliant | Standard variant |
| 14DUB320J | Box | Non-compliant | Standard variant |
| 14DUB32AC | Box | Non-compliant | Differs in title descriptor only; specs align |
The 14DUB32AC entry carries the title "OPEN STARTER 240/480V" but shares all recorded electrical and mechanical specifications with the 14DUB320x series. Title variation alone does not imply a different voltage rating without confirmed datasheet documentation.