Product Description
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| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Mounting Type | Chassis Mount |
| Relay Type | Mechanical Relay |
| Function | Programmable (Multi-Function) |
| Circuit | 1A SPST-NO |
| Delay Time | Fixed, 30 Sec |
| Contact Rating @ Voltage | 25A @ 120VAC |
| Voltage - Supply | 120VAC |
| Termination Style | Screw Terminal |
| Timing Adjustment Method | Hand Dial |
| Timing Initiate Method | Input Voltage |
| Series Features |
| 304C Percentage Timer |
| Series Description: Easily the most rugged and dependable of industrial percentage timers, the ATC 304 incorporates heavy-duty contacts that are capable of switching loads as large as 4.6 KW directly. |
| Series Operation: The 304 is available in a choice of 15, 30 and 60-second time cycles (60 Hz). Its synchronous motor drives a cam which repeatedly closes the SPST load switch for a percentage of the time cycle, as set on the timer dial, and opens it for the remainder of the cycle. When the dial pointer is set below 3%, the load switch stays open for the full cycle; it remains closed when the pointer is set above 98%. An optional Hold switch also disconnects power to the timer motor when the pointer is set below 3%. Series 304 timers operate continuously and do not reset on power interruption; when power is restored, they resume the interrupted cycle. |
| Series Applications: Ideal for controlling wattage input to electrically heated equipment, the 304 non-plug-in models can pulse loads up to 4.6 KW directly through the SPST load switch; the plug-in models can switch up to 2.3 KW loads directly. The 304 can be used with other types of electrical equipment to control the ratio of on time and off time in a fixed time cycle. In many types of ratio and cascade control systems, the 304 provides rate-of-rise set point drive control; special dial calibrations are available for this application. |
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