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C100
ONA
847490
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The Metso Nordberg C100 Jaw Crusher Pressure Switch (Part No. ONA-802291) is a protection and monitoring component installed in the crusher’s lubrication, hydraulic or pneumatic circuit. Its job is simple but critical: it senses the actual line pressure and, when the pressure falls below (or rises above) the preset value, it changes electrical state and sends a signal to the crusher control system. That signal can trigger an alarm, stop the crusher, or interlock other equipment, so the C100 never runs “dry” or outside safe pressure.
Monitors real pressure in the line feeding bearings, pitman or hydraulic functions.
Compares to a setpoint defined for the C100 system.
Outputs a switch signal (ON/OFF) to the panel/PLC.
Prevents damage to bearings, shaft, toggle system and hydraulic parts by stopping the crusher when pressure is too low.
In other words, this is the “early warning” sensor for your C100’s oil/hydraulic system.
Machine model: Metso / Nordberg C100 jaw crusher
Part number: ONA-802291
Use: 1:1 replacement of the original pressure switch on C100; no re-wiring layout change when using the same connector type.
OEM pressure range – calibrated to the operating pressures normally used on C100 crushers, so it trips at the right time.
Compact, block-type body – fits easily on the manifold or pipework inside the crusher house.
Standard electrical plug – quick connection to the crusher control cabinet; reduces installation time.
Fast switching response – reacts quickly to sudden pressure drop, protecting the machine during start-up or fault.
Corrosion-protected housing – suitable for quarry, mining and dusty plant environments.
Service-friendly – can be removed and replaced during a routine shutdown without dismantling major parts.
Lube oil pressure monitoring: stop the crusher if oil pump fails or filter is blocked.
Hydraulic circuit monitoring: confirm that clamping / tensioning / cylinder functions have reached working pressure.
Interlock / sequencing: only allow the C100 to start when minimum pressure is present.
Fault diagnosis: operators can quickly tell whether “no start” or “alarm” is caused by low pressure.
Mount the switch upright on the designated port of the C100 lubrication / hydraulic block.
Check thread size and sealing before tightening.
After installation, simulate a low-pressure condition (or start with pump off) to confirm the switch signal is received by the panel.
If the crusher trips frequently for “low pressure” but actual pressure is normal, inspect or replace this switch.
Keep at least one or two pieces in stock together with pumps, filters and relays – it is a small, fast-moving spare.
Q1: Can I use a universal pressure switch instead?
You can, but the trip point and connector may not match the C100, which can cause nuisance trips or no protection. Using ONA-802291 avoids that.
Q2: What happens if the pressure switch fails closed?
The crusher may try to run without real pressure. That’s why it’s a good practice to replace the switch at overhaul and test the interlock.
Q3: Does it measure flow?
No, it’s a pressure device (ON/OFF), not a flowmeter.
Q4: Can it be shipped with other C-series spares?
Yes – it’s small and can be packed together with jaw plates, toggle parts and filters to save freight.
The Metso Nordberg C100 Jaw Crusher Pressure Switch (Part No. ONA-802291) is a protection and monitoring component installed in the crusher’s lubrication, hydraulic or pneumatic circuit. Its job is simple but critical: it senses the actual line pressure and, when the pressure falls below (or rises above) the preset value, it changes electrical state and sends a signal to the crusher control system. That signal can trigger an alarm, stop the crusher, or interlock other equipment, so the C100 never runs “dry” or outside safe pressure.
Monitors real pressure in the line feeding bearings, pitman or hydraulic functions.
Compares to a setpoint defined for the C100 system.
Outputs a switch signal (ON/OFF) to the panel/PLC.
Prevents damage to bearings, shaft, toggle system and hydraulic parts by stopping the crusher when pressure is too low.
In other words, this is the “early warning” sensor for your C100’s oil/hydraulic system.
Machine model: Metso / Nordberg C100 jaw crusher
Part number: ONA-802291
Use: 1:1 replacement of the original pressure switch on C100; no re-wiring layout change when using the same connector type.
OEM pressure range – calibrated to the operating pressures normally used on C100 crushers, so it trips at the right time.
Compact, block-type body – fits easily on the manifold or pipework inside the crusher house.
Standard electrical plug – quick connection to the crusher control cabinet; reduces installation time.
Fast switching response – reacts quickly to sudden pressure drop, protecting the machine during start-up or fault.
Corrosion-protected housing – suitable for quarry, mining and dusty plant environments.
Service-friendly – can be removed and replaced during a routine shutdown without dismantling major parts.
Lube oil pressure monitoring: stop the crusher if oil pump fails or filter is blocked.
Hydraulic circuit monitoring: confirm that clamping / tensioning / cylinder functions have reached working pressure.
Interlock / sequencing: only allow the C100 to start when minimum pressure is present.
Fault diagnosis: operators can quickly tell whether “no start” or “alarm” is caused by low pressure.
Mount the switch upright on the designated port of the C100 lubrication / hydraulic block.
Check thread size and sealing before tightening.
After installation, simulate a low-pressure condition (or start with pump off) to confirm the switch signal is received by the panel.
If the crusher trips frequently for “low pressure” but actual pressure is normal, inspect or replace this switch.
Keep at least one or two pieces in stock together with pumps, filters and relays – it is a small, fast-moving spare.
Q1: Can I use a universal pressure switch instead?
You can, but the trip point and connector may not match the C100, which can cause nuisance trips or no protection. Using ONA-802291 avoids that.
Q2: What happens if the pressure switch fails closed?
The crusher may try to run without real pressure. That’s why it’s a good practice to replace the switch at overhaul and test the interlock.
Q3: Does it measure flow?
No, it’s a pressure device (ON/OFF), not a flowmeter.
Q4: Can it be shipped with other C-series spares?
Yes – it’s small and can be packed together with jaw plates, toggle parts and filters to save freight.
