Description
The Cole Hersee 75910 is a double-pole, single-throw (DPST) battery and field master switch developed by Cole Hersee with ESG Asia Pacific and major mining corporations to meet specific Australian mine-site safety requirements. It disconnects the battery and the alternator or generator field circuit in one action.
Its key difference is an extended 17° actuation point, compared with the standard 4° of switches such as the 75904. This guards against accidental actuation, even when a lockout lever is fitted, so the switch stays off once it has been turned off.
Silver contacts are rated 125A continuous and 1000A intermittent, with 20A continuous field terminals, across 6V to 36V systems. The switch is O-ring sealed, has an indexing pin to prevent rotation, and accepts padlocks up to 6mm for lockout. A steel-plated case, brass mounting stem and studs and a chrome-plated die-cast lever complete the build.
Key Benefits
- Developed for Australian mining safety requirements
- Extended 17° actuation point resists accidental switching
- Accepts padlocks up to 6mm for lockout
- Silver contacts rated 125A continuous, 1000A intermittent
- Isolates battery and alternator/generator field together
- Weather resistant, O-ring sealed with anti-rotation pin
Specifications
- Part numbers – 75910B, 75910BX
- Circuitry – DPST, On/Off, battery and field master
- Voltage – 6V–36V multivoltage
- Amperage – 1000A intermittent, 125A continuous; field 20A continuous
- Actuation point – Extended 17° minimum of Off
- Contacts – Silver
- Actuator – Chrome-plated die-cast alloy lever
- Case – Steel plated
- Battery studs – 2 × 3/8″-24, brass
- Field studs – 2 × 10-32
- Maximum terminal torque – 8–10 Nm
- Mounting stem – 3/4″-24 brass thread, 13mm long
- Panel thickness – Up to 6.5mm
- Anti-rotation pin – Yes, brass indexing pin
- Padlock – Accepts padlocks up to 6mm
- Lockout levers – 24505-01B chrome, 24505-01RB red, 24505-01YB yellow
- Ingress protection – IP64
- Operating temperature – −40°C to +85°C
- Dimensions – H 110 × Ø 67 mm
- Application – Heavy duty, mining
Applications
- Australian mine-site vehicles and plant
- Underground and open-cut mining equipment
- Heavy trucks and service vehicles
- Construction and earthmoving equipment
