Johnson Controls R310A Current Sensing Switch
The R310A Series Current Sensing Switch detects alternating current (AC) flow in a single circuit without being connected to that circuit. It may be used in any application where current detection is required. The R310A replaces the R10A used with Johnson Controls/PENN time delay oil failure cutout controls such as the P28, P45, and P445. These applications incorporate internal line breaking overload protection, where lockout due to overload cycling is unacceptable or undesirable. The R310A switch is not intended to detect breakage of belts. The R310A is molded in a high dielectric material, which permits mounting inside a starter or contactor.
• small size allows mounting in small enclosure
• solid-state switching contains no moving parts to fail
• low 0.5 ampere activation allows monitoring of most small equipment circuit loads
• high 200 ampere monitoring capacity allows monitoring of heavy duty equipment
• large 0.70 in. (18 mm) diameter sensor hole accepts large diameter wire sizes and multiple coilings of smaller diameter wire sizes
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| Cat # | Descriptions |
| R310AD-1C | Current Sensing Switch Voltage Switching Capacity: 0-30 VAC Used With: P445 Electronic Lube Oil Control |
| R310AE-2C | Current Sensing Switch Voltage Switching Capacity: 120-240 VAC Used With: P28 and P45 Electromechanical Lube Oil Controls |
| Switch Action | SPST, Normally Open | |
| Current Sensing Range | R310AD-1C | 0.5-200 Amperes |
| R310AE-2C | 0.75-200 Amperes | |
| Switch Threshold | R310AD-1C | 0.5 Amperes |
| R310AE-2C | 0.75 Amperes | |
| Sensor Supply Voltage | Induced from monitored conductor Isolation 000 VAC RMS |
|
| Switching Capacity | General Purpose | |
| Load: | R310AD-1C | 0.1A @ 30 VAC/DC |
| R310AE-2C | 0.5A @ 250 VAC/DC | |
| Output Polarity | Non-polarity Sensitive Output | |
| Enclosure | Nema1 | |
| Ambient Operating Conditions | 5 to 140°F (-15 to 60°C) 0-95% RH, Non-condensing |
|
| Dimensions (H X W X D) | 2.34 X 1.86 X 0.875 in. | |
| Sensor Hole Size | 0.70 in Diameter | |
| Agency Listings | UL Guide NRNT cUL Guide NRNT7 |
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