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Mersen Surge Protector Type 1+2 SPD 3 Pole 480 Volt 20KA TNC
MPN: 83120132
Alt. SKU: STPT12-12K320V-3P
This product is discontinued. Please view this replacement item.
Why Choose the STPT12-12K320V-3P Surge Protection Device?
The STPT12-12K320V-3P is a robust Type 1+2 surge protection device designed for comprehensive protection of three-phase TNC systems up to 480V. It delivers a high 12.5kA impulse current (Iimp, 10/350µs), making it an optimal choice for safeguarding critical industrial and commercial installations against lightning and transient overvoltages.
Featuring a 3-pole pluggable design with three modules, this SPD ensures ease of maintenance and fast installation. Rigorously engineered for reliability, the STPT12-12K320V-3P supports the continued safe operation of sensitive electrical equipment in demanding environments.
Technical Specifications
- Item number: 83120132
- Catalogue No: STPT12-12K320V-3P
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 3Ph, -/480V, 3+0 TNC, 3 Pole, Pluggable, 3 Modules
- EAN/UPC Code: 8435297851486
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 277/480
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 50 kA
- Protection Modes: L-PE(N)
- System Configuration: TNC
- Lightning Impulse Current (10/350) (LIMP): 12.5 kA
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 3-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 200 A [gG]
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- Replacement Plug L1: 83120003
- Product Width: 54 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.532 kg
- Sell Pack Width: 63 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.492 kg
Product Code: 83120132
Key Benefits
- High impulse current rating of 12.5kA (10/350µs) for superior lightning protection.
- Type 1+2 classification ensures comprehensive surge protection for industrial systems.
- Pluggable 3-pole design allows for quick and easy installation and maintenance.
- Visual indication system with green OK status for easy monitoring of device condition.
- Durable PA66 CT1 housing material for long-lasting performance in harsh environments.
- Compatible with TNC system configurations up to 480V nominal voltage.
Compatibility
The STPT12-12K320V-3P is compatible with three-phase TNC electrical systems operating at nominal voltages of 277/480V AC. It is suitable for integration into DIN rail-mounted switchgear and distribution panels. The device supports systems requiring a maximum back-up fuse of 200 A [gG]. Replacement plugs such as model 83120003 ensure ongoing maintenance and reliability.
Applications
- Industrial power distribution boards and panels.
- Commercial buildings requiring surge protection for sensitive electrical equipment.
- Lightning-prone areas needing robust surge protection solutions.
- Renewable energy installations with three-phase TNC systems.
- Data centres and critical infrastructure requiring high reliability surge protection.
Frequently Asked Questions
What type of surge protection does the STPT12-12K320V-3P provide?
It provides Type 1+2 surge protection, suitable for both direct lightning strikes and switching surges in three-phase TNC systems.
Can this device be installed on a DIN rail?
Yes, the STPT12-12K320V-3P is designed for DIN rail mounting, facilitating easy installation and replacement.
How do I know when the device needs replacing?
The device features a visual indication system; a green indicator means the SPD is functioning correctly, while a non-green indicator signals replacement is required.
Is this SPD suitable for use in systems with a max back-up fuse of 100 A?
Yes, as the device supports a maximum back-up fuse rating of up to 200 A [gG], it is compatible with systems using 100 A fuses.
Common Search Terms
surge protection device, SPD, Type 1+2 SPD, three-phase surge protector, 12.5kA impulse current SPD, pluggable surge protector, TNC system surge protection, DIN rail SPD, lightning protection device, industrial surge protection
| Manufacturer Part Number | 83120132 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851486 |
| Height | 76mm |
| Width | 54mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 3 Pole |
| Voltage | 480V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 20Ka |
| System Type | TNC |
| Alternative Product SKU | STPT12-12K320V-3P |
Write Your Own Review
Protection system of coordinated stages: Type 1, 2 and 3 SPDs
The SPDs of a surge protection system must be able to withstand the discharged current and provide a Ures level (residua l voltage) lower than the Ue peak voltage that the equipment can withstand. Most of the times it is not possible to achieve this with just one SPD, especially because the intensity of the surge is not known, and because of the induction of overvoltages when conductors exceed 10m.
The optimal system of protection is the 3-STEP approach, in which successive stages are combined in the performance of high discharge capacity devices and devices with an optimal voltage protection level (low). This is addressed by the definition of "Types" or "Classes" of SPDs according to the type of transient pulses to which each protected zone in the installation is subject to.
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