3M Peltor ProTac III compact

The 3M Peltor ProTac III Slim helmet-mounted model is a low-profile electronic earmuff for professional use in industrial, construction and railway work. The level-dependent function allows ambient sound and warning signals to remain audible up to 82 dB, while harmful impact and continuous noise are attenuated in accordance with EN 352. The 3.5 mm listen-only stereo input enables connection of a two-way radio or other audio source without compromising hearing protection.

Level-dependent hearing protection with slim cups
The ProTac III Slim combines noise attenuation with a level-dependent function for environmental sound. Ambient noise and warning signals remain audible up to 82 dB, ensuring that vehicles, alarms and public-address messages are detected in time. The slim cup design delivers an SNR of 25 dB (H=29 dB, M=22 dB, L=16 dB) and is suited to moderate to high noise environments where situational awareness must be maintained.

Helmet-mounted design with integrated electronics
The ProTac III Slim helmet model (MT13H220P3E) is built for integration with industrial safety helmets. Stainless-steel arms and electronics integrated into the outer part of the cup help to minimise sweat-related corrosion. This provides a robust, low-profile solution for daily use in demanding industrial environments.

Technical specifications

• Type: Electronic helmet-mounted earmuff (listen-only)
• Model: 3M Peltor ProTac III Slim Headset, helmet-mounted – MT13H220P3E
• Attenuation values (helmet, Slim): SNR 25 dB, H=29 dB, M=22 dB, L=16 dB
• Level-dependent function: Ambient sound audible up to 82 dB, peak sound limiting
• External audio: 3.5 mm listen-only stereo input, limited to 82 dB
• Power supply: 2 × AA batteries (alkaline)
• Operating time: Approx. 100 hours with alkaline batteries
• Weight (incl. batteries): Approx. 322 g (ProTac III Slim MT13H220P3E, helmet-mounted)
• Controls: On/off/mode button, [+] and [–] buttons (TPE push buttons)
• Materials:
  • Cup: ABS
  • Cushions: PVC film with PUR foam
  • Foam insert: PUR foam
  • Cup arm: Stainless steel
• Electronics: Integrated in the outer part of the cup to reduce sweat corrosion
• Auto power-off: Automatic switch-off after 4 hours without user input
• Low-battery warning: Audible signal when batteries are nearly depleted
• Supplied with: 1 × headset, 2 × AA batteries, 1 × user instruction
• Applications: Industrial workplaces, construction sites, railway works and other noisy environments where ambient sound must remain audible
• Standards and approvals: EN 352-3:2002, EN 352-4:2001/A1:2005, EN 352-6:2002
• CE marking: Tested and approved, notified body PZT GmbH, NB 1974