Siemens 20 A SPNO Solid State Relay, Zero Crossing, Panel Mount, Thyristor, 230 V Maximum Load
- RS Stock No.:
- 4729042
- Mfr. Prt No.:
- 3RF2120-1AA02
- Brand:
- Siemens
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 4729042 |
| Product description | Siemens 20 A SPNO Solid State Relay, Zero Crossing, Panel Mount, Thyristor, 230 V Maximum Load |
| Manufacturer / Brand | Siemens |
| Manufacturer part number | 3RF2120-1AA02 |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 4729042 |
| Product description | Siemens 20 A SPNO Solid State Relay, Zero Crossing, Panel Mount, Thyristor, 230 V Maximum Load |
| Manufacturer / Brand | Siemens |
| Manufacturer part number | 3RF2120-1AA02 |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 22, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Product Details
Zero Voltage Relays
Note
Temperature can affect current rating; please consult the data sheet for potential derating.
3RF21 Series
Note
Heat sink not included. For load current de-rating and heat sink details see manufacturers datasheet
Compact space-saving design, 22mm width
Zero-cross switching
IP20
Mount onto existing heatsinks
Efficient thyristors with high reverse voltage
Screw connections for fast and simple connection
Self-contained unit
Isolation voltage 600Vac
Frequency 50 / 60Hz
Specifications
| Attribute | Value |
| Brand | Siemens |
| Maximum Turn On Time | 1 (+1/2 cycle) ms |
| Terminal Type | Screw |
| Minimum Control Voltage | 15 V dc |
| Minimum Operating Temperature | -25 °C |
| Maximum Load Voltage | 230 V |
| Maximum Operating Temperature | +60 °C |
| Dimensions | 22.5 x 48 x 85 mm |
| Mounting Type | Panel Mount |
| Maximum Control Voltage | 24 V dc |
| Minimum Load Current | 0.1 A |
| Switching Type | Zero Crossing |
| Height | 85 mm |
| Control Voltage Range | 15 → 24 V dc |
| Load Voltage Range | 24 → 230 V |
| Operating Temperature Range | -25 → +60 °C |
| Maximum Load Current | 20 A |
| Depth | 48 mm |
| Output Device | Thyristor |
| Minimum Load Voltage | 24 V |
| Off State Leakage Current | 10 mA |
| Length | 22.5 mm |
| Contact Configuration | SPNO |
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