Phoenix Contact PLT-SEC-T3-230-FM Type 3 Surge Protection Device
Overview
The Phoenix Contact PLT-SEC-T3-230-FM (item number 2905229) is a pluggable type 3 / class III surge protection device for device protection in single-phase power supply networks with separate N and PE (3-conductor system L1, N, PE). It belongs to the SEC family and integrates a surge-proof fuse and a remote indication contact. According to Phoenix Contact, the Phoenix Contact PLT-SEC-T3-230-FM is also suitable for DC applications. It is built as a two-section, divisible DIN rail module, so the protection plug can be separated from the base element.
Seven Star LLC supplies the Phoenix Contact PLT-SEC-T3-230-FM to electrical contractors, panel builders and facility engineers in the Sultanate of Oman and throughout the GCC. Our sourcing and model selection support in Muscat helps customers coordinate surge protection with the rest of their low-voltage installation.
Where Type 3 Protection Fits
As general engineering background, IEC 61643-11 defines a coordinated concept: type 1 devices at the building entry divert lightning currents, type 2 devices in sub-main boards limit switching and induced surges, and type 3 devices close to sensitive equipment provide fine protection. The Phoenix Contact PLT-SEC-T3-230-FM is a type 3 / class III device tested with a combination wave of 6 kV open-circuit voltage and a nominal discharge current of 3 kA (8/20 µs). It is installed upstream of electronic loads such as PLC power supplies, controllers, instrumentation, communication equipment and building automation devices to lower the residual surge voltage they see.
The voltage protection level of the Phoenix Contact PLT-SEC-T3-230-FM is 1.35 kV or below between L and N and 1.5 kV or below between L and PE and between N and PE. Response times are 25 ns or less for L-N and 100 ns or less for L-PE and N-PE. As a general rule, a type 3 device should be installed downstream of a type 2 device, and the cable length between them should follow the manufacturer’s coordination guidance.
Ratings and Network Compatibility
The Phoenix Contact PLT-SEC-T3-230-FM is rated for a nominal voltage of 230 V AC in TN-S systems and in TT systems when used with an RCD, at 50 Hz (60 Hz). The maximum continuous operating voltage UC is 264 V AC or 230 V DC, and the rated load current is 26 A at 30 °C, because the device is wired in series with the protected load. The maximum backup fuse for through wiring of the Phoenix Contact PLT-SEC-T3-230-FM is 25 A (gG, B or C characteristic). Protective conductor current is 5 µA or less, and standby power consumption stays at 275 mVA or below at the reference test voltage of 255 V AC.
Temporary overvoltage behaviour of the Phoenix Contact PLT-SEC-T3-230-FM is specified as 440 V AC withstand for 5 s and 120 min between L-N and L-PE, with safe failure mode at 1455 V AC (200 ms) for L-PE and 1200 V AC (200 ms) for N-PE. The short-circuit current rating is 1.5 kA AC and 0.25 kA DC.
Status Indication and Remote Signalling
Surge protective devices age with every surge they divert, so status monitoring is important. The Phoenix Contact PLT-SEC-T3-230-FM provides optical fault indication on the device and a remote fault indicator contact. This N/C contact on the Phoenix Contact PLT-SEC-T3-230-FM is rated 250 V AC at 3 A AC, or 125 V DC at 200 mA DC and 30 V DC at 1 A DC, and can be wired to a PLC input or a building management system so that maintenance staff are informed when the protection needs replacement. Because the Phoenix Contact PLT-SEC-T3-230-FM is pluggable, the protection section can be changed without disturbing the wiring of the base.
Key Features
- Type 3 / class III device protection to IEC 61643-11 and EN 61643-11.
- For single-phase TN-S and TT (with RCD) systems, 230 V AC; also suitable for DC applications.
- Nominal discharge current 3 kA (8/20 µs) and combination wave 6 kV.
- Voltage protection level 1.35 kV or below L-N.
- Integrated surge-proof fuse and 26 A rated load current.
- Optical status indication and floating N/C remote indicator contact.
- Pluggable, two-section design, 17.7 mm wide (1 HP).
- Operating range −40 to +80 °C; UL SPD Type 4CA listing data.
Applications in Oman and the GCC
Lightning activity during seasonal storms, long cable runs in industrial plants and frequent switching of large motors make surge protection a practical concern in Oman and the GCC. The Phoenix Contact PLT-SEC-T3-230-FM is used in control cabinets for oil and gas facilities, water and wastewater pumping stations, telecom shelters, substations, hospitals and commercial buildings to protect 230 V AC feeders to sensitive electronics. Typical locations are the incoming 230 V supply of a PLC panel, the feeder of a DCS marshalling cabinet or the supply of a CCTV and access control rack.
For complete protection of a control panel, Seven Star LLC also supplies the Phoenix Contact TTC-6-2X1-24DC-UT surge protector for signal and data lines, the Phoenix Contact QUINT-PS/1AC/24DC/10 power supply for the downstream 24 V DC bus, and the Moore Industries SIX signal isolator for isolating analog loops.
Technical Specifications
The following data for the Phoenix Contact PLT-SEC-T3-230-FM is taken from the Phoenix Contact product data sheet for item 2905229.
| Parameter | Specification |
|---|---|
| Item number | 2905229 |
| Product type / family | Type 3 device protection / SEC family |
| IEC power supply system | TT, TN-S |
| Test classification | IEC III, T3; EN type T3 |
| Nominal voltage UN | 230 V AC (TN-S); 230 V AC (TT, only with RCD) |
| Nominal frequency | 50 Hz (60 Hz) |
| Max. continuous operating voltage UC | 264 V AC; 230 V DC |
| Rated load current IL | 26 A (30 °C) |
| Nominal discharge current In (8/20 µs) | 3 kA |
| Combination wave UOC | 6 kV |
| Voltage protection level Up | 1.35 kV or below (L-N); 1.5 kV or below (L-PE, N-PE) |
| Response time tA | 25 ns or below (L-N); 100 ns or below (L-PE, N-PE) |
| Short-circuit current rating ISCCR | 1.5 kA AC; 0.25 kA DC |
| Max. backup fuse, through wiring | 25 A (gG / B / C) |
| Remote indicator contact | N/C; 250 V AC / 3 A AC; 125 V DC / 200 mA DC; 1 A DC at 30 V DC |
| Dimensions (W × H × D) | 17.7 × 90 × 74.5 mm (depth incl. 7.5 mm DIN rail) |
| Connection | Screw, M3; 0.2 to 2.5 mm² flexible, 0.2 to 4 mm² rigid; 0.8 Nm |
| Housing material | PA 6.6-FR (UL 94 V-0) |
| Ambient temperature | −40 to +80 °C |
| Degree of protection | IP20 |
How to Order
To request a quotation for the Phoenix Contact PLT-SEC-T3-230-FM, contact the Seven Star LLC electrical team with your quantity and network details. We provide model selection support from Muscat, share the manufacturer data sheet and help coordinate type 2 and type 3 protection on projects across Oman and the GCC.
- Datasheet Phoenix Contact PLT-SEC-T3-230-FM (2905229) Product Data Sheet Download
Phoenix Contact parts listed on this page
Three product groups are represented. 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.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.Browse Phoenix Contact products by category: Isolator & Barrier, Power Modules, Automation Accessories.
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