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Siemens 3RR2242-1FA30
Monitoring Relay for Contactor 3RT2, Size S0 Standard, Digital Apparent/Active Current Monitoring
Product Description
This monitoring relay is designed for compatibility with the Contactor 3RT2. It features a size S0 standard and offers digital adjustment of apparent and active current monitoring capabilities up to 40A. The device supports a frequency range of 20-400 Hz and operates on a 3-phase supply at 24V AC/DC.
The relay includes one change-over contact and one semiconductor output for alarm and warning monitoring purposes. It is capable of detecting current overshoot, undershoot, phase failure, cable break, phase sequence fault, residual current blocking, and setting custom warning and alarm thresholds.
The relay also features an on-delay function with a range of 0-99 seconds, noise pulse suppression up to 30 seconds, pause after fault for up to 300 minutes, and a screw connection system. This device is ideal for applications requiring precise current monitoring and alarm/warning capabilities.
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Offer details
- Offer from:
- Trusted supplier — Germany, member since 2025, 5–9 employees
- Availability:
- 1 pc.Updated at: 06-10-2026In-Stock
- Warranty:
- 12 months
- Condition:
- New Surplus
Specifications
- Brand
- Siemens
- Current measurement range
- 4 kA
- Voltage type for actuating
- AC/DC
- Max. permitted off-delay time
- 30 s
- Min. adjustable off-delay time
- 0 s
- External current transformer
- Function DC-current hysteresis
Available Offers
(7)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
| Condition New Surplus | Availability 1 pc. Updated at: 06-10-2026In-Stock | Supplier GermanyTrusted supplier — member since 2025, 5–9 employees | Warranty 12 months | |
 | Condition Used | Availability 2 pcs. Updated at: 06-10-2026In-Stock | Supplier CzechiaTrusted supplier — member since 2021, 50–99 employees | Warranty 24 months | |
:fill(white):quality(80)/media/thumbor) | Condition New Factory Sealed | Availability 5 pcs. Updated at: 07-10-2026In-Stock | Supplier PolandTrusted supplier — member since 2023, 50–99 employees | Warranty 24 months | |
| Condition New Surplus | Availability 2 pcs. Updated at: 07-10-2026In-Stock | Supplier PolandTrusted supplier — member since 2023, 50–99 employees | Warranty 24 months | |
| Condition Used | Availability 2 pcs. Updated at: 07-10-2026In-Stock | Supplier PolandTrusted supplier — member since 2023, 50–99 employees | Warranty 3 months | |
 | Condition New Factory Sealed | Availability On requestLead time: 3 days | Supplier GermanyTrusted supplier — member since 2024 | Warranty Not specified |
Czechia
PolandOffer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Documents
Data Sheet
Datasheet for Siemens 3RR2242-1FA30, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 06-10-2026
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