Eaton SOL30-SAFETY/2MC4-U PV Firefighter Safety Switch, 30 A, 1000 V DC, 4-Pole, 1 NO + 1 NC 144122

Solar installers and maintenance crews use the Eaton SOL30-SAFETY/2MC4-U as a firefighter safety switch in photovoltaic systems up to 1000 V DC. It provides all-pole disconnection of two PV strings, ensuring safe isolation for emergency responders.

Key specifications

• Rated operational current: 30 A
• Rated operational voltage: 1000 V DC
• Number of poles: 4 (for 2 PV strings)
• Auxiliary contacts: 1 normally open (NO) + 1 normally closed (NC)
• Enclosure protection rating: IP65
• Mounting type: surface mount / wall mount
• Operating temperature range: -25°C to +50°C
• Connection type: screw terminals
• Max. conductor cross-section: 16 mm²
• Cable entry: pre-formed knockouts for M25/M32 cable glands
• Switching function: load break switch, DC isolator
• Locking capability: lockable in OFF position (padlock not included)
• Short-circuit withstand current: 10 kA (conditional)
• Switching mechanism: rotary handle
• Disconnection type: all-pole disconnection
• UV resistance: yes

Why choose it

The switch meets IEC/EN 60947-3 and VDE standards, ensuring compliance with photovoltaic installation requirements. Its robust IP65 enclosure withstands outdoor conditions, and the lockable OFF position enhances safety during maintenance.

Ideal use cases

• Rooftop and ground-mounted PV systems
• Firefighter safety disconnection points
• DC side isolation for inverter maintenance
• Solar carports and building-integrated photovoltaics

Good to know

The rotary handle allows quick manual operation, and the auxiliary contacts enable remote status monitoring. The enclosure is UV-resistant, ensuring long-term durability in direct sunlight.