Siemens LCE00C404024A Contactors
Key selection criteria (LCE00C404024A)
- Eight-pole arrangement (4 NO + 4 NC) delivers complete circuit isolation in a single device, but panel footprint and wiring density increase proportionally.
- 248 VA holding coil power requires a control transformer or supply branch sized for inrush—under-sized sources cause dropout at must-operate threshold (20.4 VAC).
- Chassis-mount form factor suits metallic back-planes; open construction limits deployment in dusty or wet enclosures without supplementary protection.
- Operating temperature range of 25°C to 40°C is narrow for panel environments near load centers; derating or enclosure ventilation may apply in warmer conditions.
- Electromechanical contacts carry higher let-through current than solid-state alternatives, but mechanical wear, contact bounce, and arc suppression planning govern lifespan in 30 A switching.
| Spec | Seed (LCE00C404024A) | Alternate range |
|---|
| Contact rating | 30 A | 30 A |
| Contact form | 8PST-4NO/4NC | 8PST or 9PST variants |
| Coil voltage | 24 VAC | 24–600 VAC (see alternate table) |
| Coil power | 248 VA | 248 VA |
| Mounting | Chassis | Chassis |
| Encapsulation | Box | Box |
Coil voltage variants (Siemens LCE family)
| MPN | Coil Voltage | Contact Form | Notes |
|---|
| LCE00C404024A | 24 VAC | 4NO/4NC | Seed |
| LCE00C404208A | 200–208 VAC | 4NO/4NC | — |
| LCE00C404120A | 115–120 VAC | 4NO/4NC | — |
| LCE00C404240A | 230–240 VAC | 4NO/4NC | — |
| LCE00C404277A | 277 VAC | 4NO/4NC | Must-operate 235.5 VAC |
| LCE00C404347A | 347 VAC | 4NO/4NC | Must-operate 295 VAC |
| LCE00C404480A | 460–480 VAC | 4NO/4NC | — |
| LCE00C404600A | 575–600 VAC | 4NO/4NC | — |
| LCE00C405024A | 24 VAC | 5NO/4NC | Nine-pole variant |
All share 248 VA coil power, 30 A contact rating, chassis mount, and box packaging.
Why these alternates resemble the seed
- LCE00C404120A / LCE00C404240A: identical form factor and contact arrangement; differ only in coil voltage (115–120 / 230–240 VAC), allowing same wiring layout for different supply systems.
- LCE00C404277A / LCE00C404347A: retain four NO / four NC but at higher nominal voltages; must-operate values shift accordingly (235.5 / 295 VAC), maintaining pull-in margin for North American industrial distributions.
- LCE00C404480A / LCE00C404600A: targeted at 460 V and 575/600 V systems respectively; mechanical and contact specifications unchanged from seed.
- LCE00C405024A: adds a fifth NO pole while preserving 24 VAC coil, 248 VA power, and must-operate threshold—useful when auxiliary pilot duty exceeds four-circuit capacity.
