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Brand: Phoenix Contact
Phoenix Contact PLC-RSC-230UC/21 Relay Module 1 CO, 230 V
Description
PLC-RSC-230UC/21 relay module, 1 changeover contact, 230 V UC coil
The PLC-RSC-230UC/21 (item number 2966207) is an ultra-slim pluggable relay module from the PLC-INTERFACE family with a coil that accepts 230 V AC or 220 V DC and one changeover contact for 6 A. At just 6.2 mm wide it is one of the narrowest ways to turn a mains-voltage control signal into an isolated switching contact in a control cabinet. Seven Star LLC supplies the PLC-RSC-230UC/21 in Oman and the GCC as an independent supplier in Muscat, and the data below are taken from the manufacturer technical data for this item.
Reading the PLC-RSC-230UC/21 code
- PLC-RSC: PLC-INTERFACE relay module, screw connection.
- 230UC: universal coil voltage, 230 V AC or 220 V DC (UC = AC and DC).
- 21: one changeover contact.
PLC-RSC-230UC/21 technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Phoenix Contact PLC-RSC-230UC/21, item no. 2966207 |
| Product type | Relay module, PLC-INTERFACE family, universal application |
| Nominal input voltage | 230 V AC / 220 V DC |
| Input voltage range | 179.4 … 264.5 V AC; 171.6 … 253 V DC at 20 °C |
| Coil behaviour | Monostable; typical input current 3.2 mA at 230 V AC (3 mA at 220 V DC); response time 7 ms, release time 15 ms |
| Protective circuit | Bridge rectifier; yellow LED operating display |
| Contact | 1 changeover contact, AgSnO, single contact |
| Switching voltage | 250 V AC/DC maximum; 5 V (100 mA) minimum |
| Continuous current / inrush | 6 A; inrush 10 A for 4 s; output fuse 4 A gL/gG NEOZED |
| Breaking capacity (ohmic) | up to 140 W at 24 V DC; 20 W at 48 V DC; 1,500 VA at 250 V AC |
| Switching capacity | 2 A at 24 V DC13; 3 A at 230 V AC15; 0.1 A at 220 V DC13 |
| Mechanical life | 2 x 107 cycles |
| Insulation | Rated insulation voltage 250 V, impulse withstand 6 kV, test voltage 4 kV AC winding/contact; overvoltage category III, pollution degree 3 |
| Ambient temperature | -40 °C … +55 °C; storage -40 … +85 °C |
| Connection | Screw terminal M3, 0.14 … 2.5 mm² (AWG 26 … 14), strip length 8 mm, torque 0.6 … 0.8 Nm |
| Dimensions / weight | 6.2 x 80 x 94 mm (W x H x D); about 39 g |
| Approvals / tests listed | CE, UKCA, shipbuilding approval TAE0000196, corrosive gas test ISA-S71.04 G3 harsh group, IEC 60947-5-1 |
How the PLC-RSC-230UC/21 differs from the 24 V DC types
Many cabinet signals are 230 V AC: the output of a legacy relay panel, an auxiliary contact from switchgear, or a control signal from a motor starter. Using a 24 V module would need an additional interposing relay. The PLC-RSC-230UC/21 takes the mains-level signal directly into a bridge-rectified coil input, drawing only about 3 mA, and presents an isolated changeover contact to the PLC or to the load. The contact material is AgSnO rather than the AgNi of the 24 V DC two-contact type, and the data quotes a 10 A inrush for four seconds. Compared with the 24 V PLC-RSC-24DC/21-21 the 230 V version has one contact instead of two and a narrower 6.2 mm body.
Voltage separation and divider plates
Because the PLC-RSC-230UC/21 is often used on circuits at mains voltage, the manufacturer notes that the divider plate PLC-ATP must be fitted for voltages above 250 V (L1, L2, L3) between identical terminal blocks of adjacent modules, with potential bridging by FBST 8-PLC or FBST 500 bridges. Mixed-voltage rows should keep the 230 V modules grouped and separated from 24 V modules.
Contact loading and protection
The data for the PLC-RSC-230UC/21 gives a 6 A limiting continuous current, 10 A inrush for four seconds, 4 A gL/gG NEOZED as the output fuse and 200 A conditional short-circuit current. In ohmic DC duty the breaking capacity is 140 W at 24 V DC but only 40 W at 220 V DC, so the module should not be used to break larger DC loads at high voltage. For inductive duty the data lists 3 A at 24, 120 and 230 V AC15, 2 A at 24 V DC13, 0.2 A at 110 V DC13 and 0.1 A at 220 V DC13. The minimum switching level is 5 V at 100 mA. A short-circuit-protective fuse on the output side prevents contact welding in a fault.
Selection checklist
- Coil source: 230 V AC or 220 V DC, within the stated input range.
- Load: up to 6 A at 250 V, remembering DC breaking capacity is much lower than AC.
- Maximum ambient temperature of 55 °C for this variant.
- Need for divider plates, bridges and marking accessories.
- Sibling variants: PLC-RSC-120UC/21 and PLC-RSC-24UC/21 for other coil voltages, PLC-RSC-230UC/21-21 for two contacts.
Installation and maintenance
Mount the PLC-RSC-230UC/21 on a DIN rail in rows with zero spacing, wire the coil and contact terminals with the stated torque, and fit the plates where required. The plug-in relay can be replaced without rewiring the base. Keep a note of the real switching duty so that replacement can be planned from the mechanical life figure and the contact loading, and remember that the module is electromechanical, so contact wear is greater with inductive DC loads.
Typical applications in Oman and the GCC
Typical uses are signal interfacing in switchgear and motor control centres, repeating 230 V status contacts to a PLC, switching small lamps and horns, and linking 230 V control circuits to 24 V logic in utility, water, power and building cabinets. In hot, dusty plant rooms the module should sit inside a properly rated enclosure; the manufacturer lists the ISA-S71.04 G3 harsh-environment gas test for the product.
Information to send with an RFQ
- Full type designation or item number and quantity
- Coil voltage and type (AC or DC) and source
- Load voltage, current and type (AC, DC, inductive, lamp)
- Number of contacts needed and accessories (divider plates, bridges, markers)
- Ambient conditions and approvals
- Delivery location
Documents and quotation
Send the part number PLC-RSC-230UC/21 or item number 2966207 and Seven Star LLC will confirm the documents available. Provide quantity and delivery location when you request a quotation.
Other Models in the Pc Plc Rsc Range
Seven Star LLC supplies models from the Pc Plc Rsc range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Phoenix Contact PLC-RSC-24DC/21-21 Relay Module 2 CO, 24 V DC | PLC & I/O Cards | View details |
| Phoenix Contact PLC-RSC-230UC/21 Relay Module 1 CO, 230 V | PLC & I/O Cards | You are viewing this model |
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About brand
Phoenix Contact is a German, family-owned manufacturer of electrical connection technology and industrial automation, founded in 1923 in Essen by Hugo Knümann. It began as a sales company, and in 1928 Knümann developed the modular terminal block mounted on a rail, the product the company is still best known for. Phoenix Contact is headquartered in Blomberg, North Rhine-Westphalia.
Seven Star LLC lists Phoenix Contact surge protection, power supplies and safety relays, and sources these components by order number for panel builders and maintenance teams in Oman.
Phoenix Contact company profile
| Founded | 1923, Essen, Germany, by Hugo Knümann, as Phönix Elektro- und Industrie-Bedarfsgesellschaft |
|---|---|
| Headquarters | Blomberg, Germany |
| Ownership | Family-owned (Eisert and Stührenberg families) |
| Key invention | The modular terminal block on a DIN rail, 1928 |
| Product families | CLIPLINE terminal blocks, PCB terminals and connectors, QUINT and TRIO power supplies, relay modules, surge protection, signal conditioners, Ethernet switches and PLCnext controllers |
Milestones
- 1923: Hugo Knümann founds the company in Essen.
- 1928: The first modular terminal block is developed.
- Later: Headquarters move to Blomberg, Ostwestfalen-Lippe.
Phoenix Contact parts listed on this page
The TTC-6-2X1-24DC-UT (order number 2906799) is a surge protection device with screw connection for two 24 V DC signal wires that share a common reference potential. The QUINT-PS/1AC/24DC/10 is a single-phase DIN rail power supply delivering 24 V DC at 10 A. The PSR-SCP-24DC/ESP4/2X1/1X2 (order number 2981020) is a single-channel PSR safety relay for emergency stop and safety door monitoring, with two enabling current paths and plug-in screw terminals.
Phoenix Contact products we list
Ordering Phoenix Contact components: what we need
Phoenix Contact items are ordered by a seven-digit order number together with the type designation, both printed on the side of the module. Send both, plus the quantity. If the number is unreadable, send the type text and a photo. For power supplies, state input voltage, output current and whether the unit runs in parallel or with a redundancy module. For buyers in the GCC replacing an older unit, we check the manufacturer's documentation for the listed successor type.
Facts checked against Phoenix Contact's own company history (phoenixcontact.com), October 2026.
Browse Phoenix Contact products by category: Isolator & Barrier, Power Modules, Automation Accessories.
FAQ
Questions about the Phoenix Contact PLC-RSC-230UC/21 Relay Module 1 CO,
Answers from our engineering team on installation, compatibility and integration.
01What coil voltage does the PLC-RSC-230UC/21 accept?
The nominal input is 230 V AC or 220 V DC, with ranges of 179.4 to 264.5 V AC and 171.6 to 253 V DC at 20 degrees C.
02How many contacts and what rating?
One changeover contact (AgSnO) with a 6 A limiting continuous current and a maximum switching voltage of 250 V AC/DC.
03How wide is the module?
It is 6.2 mm wide, 80 mm high and 94 mm deep and weighs about 39 g.
04What is the maximum ambient temperature?
The operating range is -40 to +55 degrees C for this variant, with storage from -40 to +85 degrees C.
05When is the divider plate needed?
The data states that divider plate PLC-ATP should be installed for voltages above 250 V (L1, L2, L3) between identical terminal blocks of adjacent modules.
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