We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
Mersen Surge Protector Type 1+2 SPD 4 Pole 277/480 Volt 20KA TT
MPN: 83120140
Alt. SKU: STPT12-12K320V-4PG
This product is discontinued. Please view this replacement item.
Why Choose the STPT12-12K320V-4PG Surge Protection Device?
The STPT12-12K320V-4PG offers robust Type 1+2 protection with a high 12.5kA Iimp (10/350) impulse rating, specifically engineered for 3-phase + neutral (3Ph+N), 277/480V TT systems. Its 4-pole, pluggable configuration ensures quick installation and maintenance, supporting critical infrastructure and industrial applications.
This four-module SPD delivers rapid suppression of transient overvoltages and lightning-induced surges, minimising equipment downtime and safeguarding sensitive electronics. Designed for reliability and compliance, it is a dependable solution for demanding power distribution environments.
Technical Specifications
- Item number: 83120140
- Catalogue No: STPT12-12K320V-4PG
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 3Ph+N, 277/480V, 3+1 TT, 4 Poles, Pluggable, 4 Modules
- EAN/UPC Code: 8435297851530
- 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-N / N-PE
- System Configuration: TT, TNS
- Lightning Impulse Current (10/350) (LIMP): 12.5 kA
- Following Current (Ifi): 100 A
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 4-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 200 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 320 V
- Uc (N-PE): 255 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,4 kV
- Replacement Plug N-PE: 83120006
- Replacement Plug L-N: 83120003
- Product Width: 72 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.675 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.63 kg
Product Code: 83120140
Key Benefits
- High impulse current capacity of 12.5kA (10/350 µs) for superior surge protection
- Pluggable 4-pole design enables fast and easy installation and maintenance
- Suitable for 3-phase + neutral, 277/480V TT and TNS systems
- Integrated visual indication system for quick status monitoring
- Complies with IEC Class I+II SPD standards ensuring reliable performance
- Compact dimensions (72 x 76 x 90 mm) save panel space
Compatibility
The STPT12-12K320V-4PG is compatible with TT and TNS system configurations operating at 277/480V AC. It supports 3-phase plus neutral wiring and is suitable for integration on DIN rails in industrial and commercial power distribution panels.
Applications
- Industrial power distribution boards
- Commercial building electrical panels
- Critical infrastructure surge protection
- Renewable energy systems requiring Type 1+2 SPD
- Lightning-prone areas needing robust surge suppression
Frequently Asked Questions
What is the maximum discharge current of this SPD?
The maximum discharge current (Imax) for the STPT12-12K320V-4PG is 50 kA (8/20 µs waveform).
Can this device be used on TN systems?
Yes, it is compatible with both TT and TNS system configurations.
How does the indication system work?
The device features a visual indicator that shows green when operational and not green when replacement is required.
Is this SPD RoHS compliant?
Yes, the STPT12-12K320V-4PG is RoHS compliant.
Common Search Terms
Surge Protection Device, Type 1+2 SPD, 12.5kA Surge Protector, 3 Phase Surge Protector, 277/480V SPD, Industrial Surge Protection, Pluggable SPD, DIN Rail Surge Protector, Lightning Surge Protector, Power Line SPD
| Manufacturer Part Number | 83120140 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851530 |
| Height | 76mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 277/480V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 20Ka |
| System Type | TT |
| Alternative Product SKU | STPT12-12K320V-4PG |
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.
Related Products
Check items to add to the cart or
