HELVIA Mura 3 Series Wall Mount Volume Controller User Manual
- June 5, 2024
- HELVIA
Table of Contents
HELVIA Mura 3 Series Wall Mount Volume Controller
UNPACKING
Thank you for purchasing your MURA 3 Series Volume Control. Carefully unpack the carton and check the contents to ensure that all parts are present and in good conditions:
- 1x MURA 3 Volume Control
- 1x Front Cover (white)
- 2x Screws
- This User manual
FEATURES AND SIZE
MURA 305
The MURA 3 Series in-wall mount Volume Controllers are designed to be installed within normal 503-standard wall boxes (108×53,5x74mm, not supplied). They allow control of the volume with, respectively, 4 positions + off for MURA 305, and 11 positions + off for MURA 310/330/360. Max. nominal powers range from 2.5W to 30W in case of 70V lines; and 5W to 60W for 100V lines. Each position attenuates the overall level from 5dB to 10dB, depending on the model. However, all they provide, in addition to the normal 70-100V audio line, the 70-100V auxiliary line at maximum level (the attenuation does not operate in this case but send the whole signal to the speaker) and the 24V relay input for switching between normal and auxiliary line in case of alarm. The MURA 3 Series is supplied with a front cover plate (white) and is compatible with BTicino® Matix® 3P plates.
Connections
Starting from the left, the following is the description of the terminals on MURA 3 Series wall volume regulators.
- COM = 70-100V Axiliary line negative pole
- HOT = 70-100V Axiliary line positive pole
- COM = 70-100V Main line negative pole
- 100V = 70-100V Main line positive pole
- SPK- = 70-100V Speaker out negative pole
- SPK + = 70-100V Speaker out positive pole
- 24V = Contacts for 24V relays command
Wiring Diagrams
SPECIFICATIONS
| MURA 305| MURA 310| MURA 330| MURA 360
---|---|---|---|---
Nominal Power @ 100V| 5W| 10W| 30W| 60W
Nominal Power @ 70V| 2.5W| 5W| 15W| 30W
Control| 4 Positions + Off| 11 Positions + Off
Step Attenuation| 10dB| 5dB
Total Attenuation| 40dB| 55dB
Input Line| 70-100V
Emergency Line (Hot)| 70-100V
Emergency Control| 24V
In-Wall Mount Box| 503 (not included)
Front Cover (included)| White
Size (WxDxH)| 120 x 20 (max) x
84mm
| 120 x 48 (max) x 84 mm
Net Weight| 80g| 160g| 170g| 180g
Packing Size (WxDxH)| 122 x 45 x 84,5 mm| 122 x 65 x 84,5 mm| 122 x 72 x 84,5
mm
Gross Weight| 110g| 190g| 200g| 210g
WARRANTY AND SERVICE
All HELVIA® products are covered by warranty according to European regulations (2 years in the case of purchase by a private person – B2C; 1 year in the case of purchase by the company – B2B). The warranty is valid from the date of purchase by the end-user (private individual or company), indicated in the purchase document (receipt in the case of a private person; invoice in the case of a company). The following cases/components are not covered by the above warranty: All accessories supplied with the product; Improper use; Failure due to wear and tear; Any unauthorized modification of the product by the user or third parties. HELVETIA must meet the warranty obligations due to any non-compliant materials or manufacturing defects, by remedying free of charge at HELVIA’s discretion by either repairing or replacing specific parts or the entire equipment
WARNING
READ CAREFULLY – only for EU and EEA (Norway, Iceland and Liechtenstein). This symbol indicates that the product must not be disposed of with household waste, according to the WEEE directive (2202/96/EC and subsequent amendments) and national legislation. The product must be delivered to a designated waste collection center (e.g. on an authorized one-for-one basis when you buy a new similar product, or to an authorized collection site for recycling waste electrical and electronic equipment). For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, approved WEEE scheme or your household waste disposal service. helviasystems.com