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Question
What is the recommended replacement product for G3N Solid-state Relays?
Answer
1.The recommended replacement product depends on the model of G3N. Check with the following table.
| Output load current | Discontinued model | Recommended replacement product (See note 1.) | Note |
| Model number | |||
| 5 A | G3N-205BM DC3-30 | None | See note 2. |
| G3N-205B DC4-30 | G3NA-205B DC5-24 | See note 3. | |
| G3N-205B AC75-125 | G3NA-205B AC100-120 | ||
| G3N-205B AC150-250 | G3NA-205B AC200-240 | ||
| 10 A | G3N-210BM DC3-30 | None | See note 2. |
| G3N-210B DC4-30 | G3NA-210B DC5-24 | See note 3. | |
| G3N-210B AC75-125 | G3NA-210B AC100-120 | ||
| G3N-210B AC150-250 | G3NA-210B AC200-240 | ||
| 20 A | G3N-220BM DC3-30 | None | See note 2. |
| G3N-220B DC4-30 | G3NA-220B DC5-24 | See note 3. | |
| G3N-220B AC75-125 | G3NA-220B AC100-120 | ||
| G3N-220B AC150-250 | G3NA-220B AC200-240 | ||
| 40 A | G3N-240BM DC3-30 | None | See note 2. |
| G3N-240B DC4-30 | G3NA-240B DC5-24 | See note 3. | |
| G3N-240B AC75-125 | G3NA-240B AC100-120 | ||
| G3N-240B AC150-250 | G3NA-240B AC200-240 |
Note:
1.If a heat sink was used, select a replacement product that uses the same heat sink.
2.There is no replacement product because the discontinued models were designed for a 3-VDC input voltage, but the replacement models are designed for 4 VDC. Replacement from 3 VDC to 4 VDC is not possible.
3."DC4-30" in the discontinued model number indicates the input operating voltage (4 to 30 VDC), while "DC5-24" in the recommended replacement model number indicates the input rated voltage. The input operating voltage is 4 to 32 VDC. Therefore the recommended replacement model covers the specifications of the discontinued model. Similarly, for models with a rated input voltage of 100 to 120 VAC, the input operating voltage is 75 to 132 VAC, and for models with a rated input voltage of 200 to 240 VAC, it is 150 to 264 VAC.
2.Comparing G3N and G3NA Solid-state Relays
| Item | G3N | G3NA | Note |
| Mounting holes | G3N-205B, -210B, -220B 47.6 to 50 pitch, two, 4.3-dia. or M4 holes G3N-240B 55 to 58 pitch, two, 4.3-dia. or M4 holes | 47.6 pitch, two 4.3 dia. or M4 holes | See note. |
| Dimensions | W43 x D68 x H26: G3N-205B, -210B W46 x D71 x H31: G3N-220B W51 x D71 x H28: G3N-240B | W43 x D58 x H27 | |
| Output voltage | Rated voltage: --- Operating voltage: 75 to 264 VAC | Rated voltage: 24 to 240 VAC Operating voltage: 19 to 264 VAC |
Note:If G3N-240B has been used, it is necessary to create mounting holes for the panel or heat sink. However, by using R99-11 Mounting Brackets, the same pitch can be used.
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