Single Phase Automatic Openwell Starter with Water Level Controller, 0.5–3 HP (OPA-B)

VUKAR OPA-B is a single phase automatic openwell starter for 0.5–3 HP pumps. It combines a Water Level Controller, included cable float switch, Water Level Indicator, Cyclic Timer and motor protection. The pump starts and stops automatically according to the connected tank-level sensor.

High-brightness dual display

Shows supply voltage, motor current, timer values and fault information for routine monitoring.

Fault display

Shows fault indications to help identify common pump and supply problems.

Motor fault counter

Records the number of motor trips so recurring faults can be reviewed.

Total run-time counter

Tracks cumulative motor operating hours for maintenance records.

Motor ON and fault indication

Shows whether the pump is running and provides a visible fault indication.

Water Level Controller

Automatically starts and stops the pump according to the connected tank-level sensor.

Water Level Indicator

Shows the connected tank's full or empty status.

Overvoltage and undervoltage protection

Stops the motor when supply voltage moves outside the user-set limits.

Overload and dry-run protection

Stops the pump when motor current indicates overload or dry-run conditions, using user-set thresholds.

Overload safety lockout

Requires a manual reset after the configured overload lockout condition.

Auto-off stop timer

Stops the motor after the user-set run duration.

Power-on start delay

Delays motor restart after the electricity supply returns.

Inbuilt Auto Switch

Can start the pump automatically after healthy power returns, according to the configured settings.

Cyclic Timer

Runs repeated ON and OFF cycles using user-set durations.

Dry-run auto-restart timer

After a dry-run trip, waits for the user-set interval before attempting a restart.

Power-failure recovery

Retains the configured timer operation after a power interruption.

Digital product registration

Lets the buyer register the product and keep the purchase record linked to support and warranty service.

Serviceable internal wiring

Uses lug-based FRLS internal wiring on terminals so internal parts can be serviced or replaced.

440 V motor run capacitor

Includes a 440 V run capacitor selected for the corresponding motor rating.

Spare-parts support

Replacement control-panel parts can be sourced for service; confirm the exact compatible part before purchase.

Protective enclosure

The metal enclosure shields the internal control components. Installation and earthing must be completed by a qualified electrician.

Powder-coated metal enclosure

The powder-coated metal cabinet protects the internal components during normal installed use.

Technical support

For installation, fault codes and warranty support, call or WhatsApp +91 63588 96254.

Cable float switch included

A cable float switch is supplied for automatic tank-level sensing.

Who should choose OPA-B?

• 0.5–3 HP single phase openwell pumps
• Automatic tank-level start and stop
• Cyclic Timer operation with motor protection

Warranty, shipping and support

A one-year parts replacement warranty applies to manufacturing defects. Requests for a defective, damaged, wrong or not-as-described product must be raised within seven days of delivery; change-of-mind returns are not offered. Shipping is free across India. Orders dispatch in 0–1 working day and delivery is normally expected 1–5 working days from the order date, subject to courier or postal service. An optional paid three-year extended warranty is available.

Frequently asked questions

Does OPA-B automatically start and stop the pump by tank level?
Yes. The connected cable float switch senses tank level, and the Water Level Controller operates the pump according to its configured logic.

Is the cable float switch included?
Yes. A cable float switch is supplied for automatic tank-level sensing.

Is an MCB included?
An inbuilt MCB is not stated for this model. Compare OPA-H if you need an MCB-equipped automatic openwell panel.

How should it be installed?
Have a qualified electrician verify the motor rating, float switch, capacitor, protection settings, earthing and power wiring before operation.

Who handles order and delivery support?
Call or WhatsApp +91 95121 72271, or email online@vukar.com. For technical support, contact +91 63588 96254.