The Telergon M21 Series is a compact range of fuse switch disconnectors and switch fuses engineered for industrial and commercial low-voltage installations worldwide.

The M21 range of fusible switches ensures reliable fuse-based isolation while complying with the industry’s most recognized international standards.

Current Ranges & Fuse Compatibility

• IEC 60947-3 compliant for use with NH and BS fuses: from 400A up to 800A

 Key Features

• Available in 3-pole, and 4-pole versions
• Short circuit rating up to 200kA
• Double-break contact system for full and secure fuse isolation
• Load break switching
• Direct of external handle, front operation, IP65

Applications

• Industrial switchboards and control panels
• Electrical distribution in commercial buildings
• Utilities, infrastructure, and energy systems
• OEM applications: HVAC, machinery, and automation
• Power Electronics (Auxiliary services panel)

Certified for Global Markets

• IEC 60947-3

Bypass changeover switches on-load, are available from 125 to 2000A in 3P – 3P+N. Uninterrupted duties in extreme tropic and polar conditions, as well as the polluted environment of any industrial process. Protection against accidental over voltages in equipments connected between phase and neutral (our standard 3P+N) whit advanced switched neutral pole (early make – late break).

Possibility with motorized operation from 125A up to 2000A. The motorized unit is a stand-alone kit that is easy to install or replace if necessary.

Changeover switches on-load, are available from 125A to 200A and from 2000A up to 3150A in 3P – 3P+N.  Long electrical and mechanical life even under extreme conditions (tropic and polar), as well as the polluted environment of any industrial process. Protection against accidental over voltages in equipments connected between phase and neutral (our standard 3P+N) whit advanced switched neutral pole (early make – late break).

Ready to motorize in size 0 (125A to 200A), 4 and 5 (1600A to 3150A). The motorized unit is a stand-alone kit that is easy to install or replace if necessary.

Switch – disconnectors on-load available from 1250A up to 3150A in 6P or 8P versions. Rated breaking current of up to 8 times the rated operational current, whit ability to establish and support short circuit currents up to 100kA.

Uninterrupted duties in extreme tropic and polar conditions, as well as the polluted environment of any industrial process. Parallel arrangement for frontal operation to increase the number of available contacts.

Available with manual and motorized operation from 1250A to 2000A.

Cam switches available from 12 to 1200A (under request) in several construction types (series), different types of fixations (panel mounting, quick fixing Ø 22, base mounting, etc.) inside a wide range of sizes, currents, and extensive range of accessories. They are manufactured according to IEC / EN 60947-3 standard, CSA 22.2-14, UL 60947-4-1.

For more information on this series; see downloadable document about accessories and General Information of the series.

Switch – disconnectors on-load, are available from 200 to 800A and from 1250A up to 1800A in 3P – 3P+N & 4P versions (under request). Rated breaking current of up to 8 times the rated operational current, whit ability to establish and support short circuit currents up to 100kA.

Uninterrupted duties in extreme tropic and polar conditions, as well as the polluted environment of any industrial process. Protection against accidental over voltages in equipments connected between phase and neutral (our standard 3P+N) whit advanced switched neutral pole (early make – late break).

Available with manual or motorized operation from 200 A up to 1600 A.