HQ903A6
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The HQ903A6 is a timer/controller with a supply voltage of 120 VAC and a line frequency of 60 Hz. Manufactured by Danaher as part of their Timers and Controllers series, it operates within a temperature range of -23°C to +60°C and boasts a contact rating of 10 A at 120 VAC and a motor rating of 1/3 HP at 125 VAC.
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Product Description:
The HQ903A6 Timer is Danaher’s product, which works reliably over a specified temperature range of -10°F to 140°F (-23°C to +60°C). This timer works with a line frequency of 60 Hz, which is compatible with standard electrical supply systems.
The HQ903A6 timer is designed with an operating voltage of 120V. This voltage can withstand +10% to -15% deviation, thus providing steady performance across varying supply levels. Its time range capacity is only 60 seconds, which means it is extremely effective in applications that need short-cycle and accurate sequencing timing. This timer also has a pilot light, implemented as electrically isolated. This pilot light provides a secure indication of status to operators without interference with other connected circuits. The HQ903A6 timer accommodates mounting support with CYCL-FLEX® series plug-in systems, providing easy installation and reliable fastening for professional control panel or equipment installation. The four mounting holes are also integrated into this timer, which offers firm and stable placement, enhancing reliability through high-intensity operating cycles. This timer weighs 0.8 kg, with an available compact profile suitable for installation while retaining the necessary strength for continuous industrial applications.
This timer’s burden is rated at up to 4 VA, which indicates low power consumption with improved efficiency without altering the accuracy of operation. It also provides a cycle adjustment feature, where ON time settings are adjustable from 5% to 100% of the total cycle time, accommodating flexible timing controls. Its contact rating is well established at 10 amps at 120 VAC for stable load management and safe operation in industrial and electrical applications. The setability of this timer is rated at ±1%, which means that accurate setting adjustments are always obtainable, even in applications with accuracy needs.
Frequently Asked Questions about HQ903A6:
Q: How does the ±1% setability of the HQ903A6 benefit users?
A: It ensures highly accurate timing adjustments. This precision minimizes error in processes where consistent cycle control is essential.
Q: Why is the pilot light of the HQ903A6 electrically isolated?
A: The isolation prevents interference with the control circuit. It also provides safe and clear visual feedback for operators.
Q: How does the 4 VA maximum burden improve timer performance?
A: It keeps the device energy-efficient during operation. This reduces unnecessary power consumption while maintaining stability.
Q: Why is compatibility with CYCL-FLEX® mounting important for the HQ903A6?
A: It simplifies installation in standard setups. It also secures the timer firmly for long-term reliability.
Q: What role do the four mounting holes play in HQ903A6 installation?
A: They provide strong mechanical stability. They also reduce vibration-related risks during extended use.
