---
description: The BUA-40 AC Surge Protector by BENY, compliant with EN 61643-31, offers 385V Type 2 protection, with a quick response time and optional remote signaling.
title: "BENY BUA-40: 385V AC SPD, Type 2 | CE Certified | BENY New Energy"
image: https://www.beny.com/wp-content/uploads/2021/03/BUA-40-Surge-Protection-Device-03.jpg
---
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- ![BUA 40 Surge Protection Device 02]()
- ![BUA 40 Surge Protection Device 01]()
- ![BUA 40 Surge Protection Device 03]()
- ![BUA 40 Surge Protection Device 04]()
- ![BUA 40 Surge Protection Device 02]()
- ![BUA 40 Surge Protection Device 01]()
- ![BUA 40 Surge Protection Device 03]()
- ![BUA 40 Surge Protection Device 04]()
# AC SPD 275V/385V 1P-4P BUA-40 IEC
BENY New Energy BUA AC Surge Protector 275V/385V Type 2 Surge Protective Devices SPDs CE Certified
#### Highlights :
- RoHS material
- 275V/385V Type 2 AC SPD
- According to IEC/EN 61643-11
- Thermal disconnect inside for fault indication
- 5 years warranty
- ![rohs]()
- ![TUV 100X100 icon]()
- ![CE-Certified icon]()
[Download Datasheet](https://www.beny.com/wp-content/uploads/2021/03/AC-Surge-Arrester-BUA-40.pdf) [Request A Quote](javascrpt:;)
## Type 2 AC surge protection device up to 385V
Type 2 AC SPD protects the AC equipments and circuits from surges damage or overvoltage.
Improve the PV system safety for a longer PV system life. According to EN 61643 standard.
## Plug-in MOV modules
The surge protection device is consisting of a base part and plug-in high energy MOV protection modules.
Remote signaling contact for monitoring device is for options.
With thermal disconnect mechanical inside for fault indication by red indicator flag.
## SPECIFICATION
| Model | BUA-40/1, BUA-40/2 | BUA-40/3, BUA-40/4 |
| --- | --- | --- |
| Moulds | 1, 2 | 3, 4 |
| SPD according to EN 50539-11 | Type 2 | |
| Open Voltage Uoc Max | 385V | |
| Max. discharge current (8/20 µs) | 40kA | |
| Nominal discharge current (8/20 µs) | 20kA | |
| Voltage protection level Up | ≤1.8kV | |
| Short-Circuit Current Rating (Isccr) | 1.0kA | |
| Response Time (tA) | ≤25ns | |
| Operating state / fault indication | Green / Red | |
| Remote Signaling Contact (optional) | Changeover contact | |
| For mounting on | 35mm DIN rails | |
| Degree of protection | IP20 | |
| Certificate | TUV / CE | |
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