GARO DTPN18 5 Way 3 Phase Distribution Board – 125A Main Switch and Type 2 SPD
The GARO DTPN18 5 Way 3 Phase Distribution Board is a surface-mounted TPN distribution board designed for 230/400V commercial and light industrial electrical installations. Offering a balance between compact enclosure size and outgoing circuit capacity, it provides a practical solution for three-phase distribution where space and future circuit requirements must be considered.
Although GARO specifies 6 nominal three-phase ways (18 single-phase ways), the factory-fitted MCB protecting the Type 2 SPD occupies one complete three-phase way. This leaves 5 usable three-phase ways, equivalent to 15 single-phase module positions for outgoing protection. A 125A four-pole main switch is supplied and fitted as standard.
Key Features – GARO DTPN18 5 Way 3 Phase Distribution Board
- Usable three-phase capacity: 5 outgoing ways after allowing for the SPD protective MCB.
- Nominal capacity: 6 three-phase ways / 18 single-phase ways.
- Single-phase module equivalents: 15 remaining positions, depending on the widths of selected protective devices.
- Surge protection: factory-fitted Type 2 SPD with dedicated protective MCB.
- Main switch: 125A four-pole switch fitted as standard.
- Enclosure: surface-mounted steel construction with IP20 ingress protection and IK05 impact rating.
- Dimensions: 460mm wide × 730mm high × 130mm deep.
- Outgoing protection: compatible GARO MCBs, RCBOs and AFDDs can be selected separately.
- Main switch upgrade: 125A configuration; optional 250A upgrade not specified for this model.
How Many Ways Are Available?
The GARO DTPN18 5 Way 3 Phase Distribution Board has a nominal capacity of 6 three-phase ways (18 single-phase ways). However, the included SPD protective MCB occupies the space of one three-pole outgoing device.
As supplied, the board provides 5 usable three-phase ways (15 single-phase module equivalents) for additional outgoing circuits. The actual circuit count depends on the number of poles and module widths of the selected MCBs, RCBOs and AFDDs.
Technical Specifications – GARO DTPN18 5 Way 3 Phase Distribution Board
| Manufacturer | GARO |
|---|---|
| Product code | DTPN18 |
| Usable three-phase outgoing ways | 5 |
| Nominal three-phase ways | 6 |
| Usable single-phase module equivalents | 15 |
| Nominal single-phase ways | 18 |
| SPD protective MCB | Factory fitted; occupies one three-phase outgoing way (3 modules) |
| Voltage range | 230–400V AC |
| Main switch | 125A four-pole, factory fitted |
| Surge protection | Type 2 SPD fitted as standard |
| Dimensions (W × H × D) | 460 × 730 × 130mm |
| Ingress protection | IP20 |
| Impact rating | IK05 |
| Busbar rating | 25kA (manufacturer stated) |
| Mounting | Surface |
| Incoming line terminal | 50mm² |
| Outgoing neutral and earth terminals | 25mm² |
| Main switch upgrade | 125A main switch supplied; optional 250A upgrade not specified for this model |
Selecting Outgoing Protection
The GARO DTPN18 5 Way 3 Phase Distribution Board accommodates compatible MCBs, RCBOs and AFDDs, allowing electricians to configure outgoing circuit protection according to installation requirements. The factory-fitted protective MCB is dedicated to the Type 2 SPD and cannot be used for an additional outgoing circuit.
Browse our GARO Circuit Protection Devices to select suitable devices.
Compare Other GARO DTPN Boards
For smaller or larger installations, compare the remaining GARO TPN distribution boards below. All usable capacities account for the way occupied by the SPD protective MCB.
- GARO DTPN12 – 3 Usable Three-Phase Ways (4 Nominal; 9 Single-Phase Module Equivalents)
- GARO DTPN24 – 7 Usable Three-Phase Ways (8 Nominal; 21 Single-Phase Module Equivalents)
- GARO DTPN36 – 11 Usable Three-Phase Ways (12 Nominal; 33 Single-Phase Module Equivalents)
- GARO DTPN48 – 15 Usable Three-Phase Ways (16 Nominal; 45 Single-Phase Module Equivalents)
GARO Downloads and Related Products
Explore our dedicated GARO 3 Phase Distribution Boards category or browse the complete GARO Circuit Protection range.
Download the GARO DTPN Technical Datasheet and Declaration of Conformity or the GARO DTPN Range Brochure (October 2026) for further manufacturer information.
Outgoing MCBs, RCBOs and AFDDs are not included unless otherwise stated. Confirm compatibility, cable sizing and installation requirements against GARO’s technical documentation.
