Type 1+2 DIN Rail Surge Protector for Main Panels
LEEYEE supplies Type 1+2 DIN rail surge protectors for incoming panels, main distribution boards, industrial electrical cabinets and installations with higher lightning or surge exposure. This page helps buyers choose a combined Type 1 and Type 2 SPD by installation point, system voltage, impulse current requirement and panel design.
What is a Type 1+2 DIN rail surge protector?
A Type 1+2 DIN rail surge protector is a combined surge protective device designed to provide both lightning current discharge capability and distribution-level surge protection in one modular device. It is commonly used at the incoming side of a low-voltage system, especially where the installation has higher surge exposure or project requirements call for combined protection.
When should you choose a Type 1+2 DIN rail SPD?
Type 1+2 DIN rail SPDs are usually selected for incoming panels or projects where a standard Type 2 SPD may not be enough. The decision should be based on system exposure, installation position and project requirements.
| Project Condition | Recommended Choice | Why It Matters | Buyer Note |
|---|---|---|---|
| Main incoming panel | Type 1+2 DIN rail SPD | The incoming side may face higher surge energy before internal distribution. | Confirm system voltage, wiring and earthing before selection. |
| External lightning protection system nearby | Type 1 or Type 1+2 SPD may be required | Systems with higher lightning exposure need impulse current capability. | Follow project design and local electrical requirements. |
| Overhead line or exposed installation | Type 1+2 may be safer than only Type 2 | Overhead supply routes can increase surge exposure. | Check risk level and coordination with downstream protection. |
| Industrial or critical equipment panel | Type 1+2 at incoming side, Type 2 downstream if needed | Critical systems may need layered surge protection. | Consider downstream equipment sensitivity and panel layout. |
| Standard sub-distribution board | Type 2 DIN rail SPD may be enough | Not every panel needs Type 1+2 protection. | Use Type 2 page for ordinary distribution-level protection. |
Where Type 1+2 DIN rail surge protectors are used
Type 1+2 SPDs are most useful where the buyer needs a compact DIN rail device for incoming protection and higher surge exposure conditions.
Incoming panels and main boards
Used near the incoming side of low-voltage electrical systems where combined protection is required.
Factory and control cabinets
Suitable for industrial panels, machinery cabinets and electrical systems with higher exposure or critical loads.
OEM and panel builder projects
Useful for OEM cabinet builders and project buyers who need consistent DIN rail SPD supply and model matching.
How to choose a Type 1+2 DIN rail SPD
A Type 1+2 SPD should be selected by the actual system design. Do not choose only by the highest kA value. Check the full datasheet and match the SPD to voltage, wiring, discharge current and installation position.
AC Type 1+2 DIN Rail SPD
For main AC distribution panels, incoming boards and industrial electrical cabinets.
OEM Type 1+2 DIN Rail SPD
For brands, panel builders and project buyers who need repeated supply and product matching.
Built for B2B surge protection supply
LEEYEE is a specialized surge protection and low-voltage protection supplier, trusted for solar PV, power distribution, telecom, industrial, and OEM applications.
CNSPD is LEEYEE’s surge protection-focused brand platform, built to help global buyers source reliable SPDs and related low-voltage protection products.
Installation details to confirm before ordering
Type 1+2 DIN rail SPDs should be selected and installed according to the actual project design, incoming system condition, earthing method, backup protection and manufacturer datasheet.
Check before selection
- Incoming system voltage and maximum continuous operating voltage.
- Single-phase or three-phase wiring.
- Earthing system and pole configuration.
- Required Iimp, In, Imax and Up values.
- Main panel location and exposure level.
- Backup fuse or circuit breaker requirements.
Avoid these mistakes
- Choosing Type 1+2 only because it looks stronger.
- Ignoring whether the panel really needs impulse current capability.
- Using Type 2 where project design requires Type 1+2.
- Installing with long and messy connection leads.
- Skipping backup protection coordination.
- Replacing models without checking datasheets and coordination.
Continue your SPD selection
Choose the related page that better matches your system type, installation position or voltage requirement.
DIN Rail Surge Protector
Start here if you need to compare AC, DC, Type 2 and Type 1+2 DIN rail surge protectors.
Type 2 DIN Rail Surge Protector
For AC distribution boards, sub-panels, control cabinets and standard panel-level protection.
DC DIN Rail Surge Protector
For PV combiner boxes, inverter DC inputs and solar DC surge protection applications.
Type 1+2 DIN rail surge protector FAQs
What is a Type 1+2 DIN rail surge protector used for?
It is used for combined lightning current and surge protection, commonly near incoming panels, main distribution boards and installations with higher surge exposure.
Is Type 1+2 SPD better than Type 2 SPD?
Not always. Type 1+2 is used when the installation needs impulse current capability and distribution-level surge protection. For ordinary sub-distribution panels, Type 2 may be enough.
Where should a Type 1+2 SPD be installed?
It is commonly installed near the incoming side of a low-voltage electrical system, such as a main distribution board or main electrical cabinet.
What information should I send before requesting a quote?
Please send system voltage, AC or DC type, wiring system, installation location, expected SPD class, required standard, quantity and target market.
Does LEEYEE support OEM Type 1+2 DIN rail SPDs?
Yes. LEEYEE supports OEM and distributor projects for Type 1+2 DIN rail surge protectors, including model selection, labeling, packaging and B2B supply communication.
Need a Type 1+2 DIN rail SPD for your main panel?
Send us your system voltage, wiring type, installation position and project requirement. LEEYEE will help you match the suitable Type 1+2 DIN rail surge protector for your incoming panel, main distribution board or OEM cabinet.