AC Surge Protective Devices · BR-12.5M 1P+N
BR-12.5M Type 1+2 AC Surge Protective Devices
A combined Type 1 and Type 2 SPD family in 1P+N configuration for specified TT and TN-S systems. The manufacturer publishes separate L–N and N–PE impulse ratings.
Type 1 + 2SPD classification
1P+NConfiguration
12.5kAL–N Iimp
150 / 275 / 320VL–N Uc options
Product Overview
BR-12.5M 1P+N combines Class I and Class II surge protection. The L–N Uc choice changes the published protection level, so the exact row must be selected against the system voltage and earthing arrangement.
Key Features
- Type 1 + Type 2 classification
- 1P+N topology for TT / TN-S
- Separate L–N and N–PE ratings
- Three L–N Uc variants
- Remote-signal option shown in manufacturer data
Available Models / Configurations
Supplier-listed family information; confirm the exact orderable RITOKS configuration.
| Manufacturer model | Uc L–N / N–PE | Iimp L–N / N–PE | Up L–N / N–PE |
|---|---|---|---|
| BR-12.5M 150 1P+N | 150 / 255 V AC | 12.5 / 25 kA | ≤0.8 / ≤1.5 kV |
| BR-12.5M 275 1P+N | 275 / 255 V AC | 12.5 / 25 kA | ≤1.3 / ≤1.5 kV |
| BR-12.5M 320 1P+N | 320 / 255 V AC | 12.5 / 25 kA | ≤1.5 / ≤1.5 kV |
Technical Specifications
| SPD type | Type 1 + Type 2 / Class I + Class II |
|---|---|
| Topology | 1P+N |
| Iimp (10/350 µs), L–N / N–PE | 12.5 / 25 kA |
| In (8/20 µs), L–N / N–PE | 25 / 50 kA |
| Isccr | 25 kA rms |
| Maximum backup fuse | 125 A gG |
| Uc L–N | 150 / 275 / 320 V AC by model |
| Uc N–PE | 255 V AC |
Applications
Illustrative panel environments; confirm equipment fit and circuit requirements for the selected model.
Main Distribution Boards
Combined Type 1+2 protection at a specified board position.
TT System Panels
1P+N topology when the exact system arrangement matches.
TN-S Installations
Surge protection with documented L–N and N–PE modes.
Information to Confirm for Selection
- Earthing system and installation position
- Exact L–N Uc model
- Iimp, In and Up by protection mode
- Prospective short-circuit current and backup fuse
- Remote signalling requirement
FAQ
Is BR-12.5M a Type 1 or Type 2 SPD?
The manufacturer classifies this 1P+N range as combined Type 1 + Type 2.
Are L–N and N–PE ratings identical?
No. The published ratings are separate and should be read by mode.
Does Up stay the same across Uc models?
No. The L–N Up value differs between the 150, 275 and 320 V options.
Related Products
Request a Quote
Send the exact model, required ratings, quantity and destination. We will confirm availability and documentation before quotation.
Please include: Earthing system and installation position; Exact L–N Uc model; Iimp, In and Up by protection mode.