Siemens 3RQ30181AB00 General Purpose Relay
3RQ30181AB00 Specifications
| Parameter | Value |
|---|---|
| Coil Voltage | 24 VAC/DC |
| Contact Form | SPDT (1 Form C) |
| Contact Rating | 3 A |
| Contact Material | Silver Tin Oxide (AgSnO) |
| Coil Type | Non-Latching |
| Mounting | DIN Rail |
| Operate Time | 12 ms |
| Operating Temperature | −25°C to 60°C |
| Encapsulation | Bulk |
| Features | Lighted Indicator |
The 3RQ30181AB00 uses the Siemens 3RQ301 series non-latching relay platform with AgSnO contacts suited for moderate inductive loads. Bulk packaging is standard for this base suffix.
Design Trade-offs
- Operate time vs alternatives: At 12 ms, the seed sits between the 8 ms (115 V variants) and 9 ms (230 V variants) family members; DC-only coil versions (5 ms) operate faster by virtue of coil geometry.
- Temperature range vs extended variant: The −25°C to 60°C window covers typical cabinet environments but excludes the −40°C to 70°C range of the 3RQ30182AM080AA0, which uses a different coil construction.
- Bulk vs box encapsulation: Bulk packaging reduces per-unit cost and is preferable for high-volume panel builds; box packaging (suffix 01 and later family revisions) may suit spare-stock or field-service needs.
- AC/DC dual-voltage coil vs DC-only: The 24 VAC/DC coil is convenient for mixed-supply architectures; DC-only variants (e.g., 3RQ30182AM080AA0) sacrifice universal input flexibility for faster response.
- Lighted indicator: The integral indicator aids commissioning and fault isolation but adds coil-leakage-path complexity; panels without visual-access requirements may treat this as unnecessary cost.
Family Voltage Comparison
| MPN | Coil Voltage | Operate Time | Encapsulation | Temp Range |
|---|---|---|---|---|
| 3RQ30181AB00 | 24 VAC/DC | 12 ms | Bulk | −25°C to 60°C |
| 3RQ30181AB01 | 24 VAC/DC | 12 ms | Box | −25°C to 60°C |
| 3RQ30181AE00 | 115 VAC/DC | 8 ms | Box | −25°C to 60°C |
| 3RQ30181AF00 | 230 VAC/DC | 9 ms | Box | −25°C to 60°C |
| 3RQ30182AB00 | 24 VAC/DC | 12 ms | Box | −25°C to 60°C |
| 3RQ30182AB01 | 24 VAC/DC | 12 ms | Box | −25°C to 60°C |
| 3RQ30182AE00 | 115 VAC/DC | 8 ms | Box | −25°C to 60°C |
| 3RQ30182AF00 | 230 VAC/DC | 9 ms | Box | −25°C to 60°C |
| 3RQ30182AM080AA0 | 24 VDC | 5 ms | Box | −40°C to 70°C |
All listed MPNs share DIN Rail mounting, SPDT contact form, 3 A silver tin oxide contacts, and the non-latching coil type. The 3RQ30182 suffix denotes a later mechanical revision with box packaging as standard.