Johnson Controls A70 Series Four-Wire, Two-Circuit Temperature Control
Four-Wire, Two-Circuit Temperature Control
A70 Series
The A70 Series temperature control incorporates a vapor-charged sensing element. The A70G, A70H, and A70K have a 4-wire, 2-circuit contact block that contains two isolated sets of contacts. The contacts are designed so that when the main contact opens, the auxiliary contact closes.
• long-life, snap-acting contacts
• automatic or manual reset models
Select a link under the "item" tab below to order.
| Cat # | Auxiliary Contacts | Main Contacts | Range °F (°C) | Max. Bulb Temp. °F (°C) | Range Adjuster | Diff F°(C°) | Bulb and Capillary |
| A70GA-1C¹ | Close Low | Open Low | 15 to 55 (-9.4 to 12.8) | 400 (204.4) | Screwdriver slot | 5 (2.8) | 20 ft of 1/8 in. O.D. Tubing |
| A70GA-2C | Close Low | Open Low | 35 to 80 (1.7 to 26.7) | 250 (121) | Screwdriver slot | 3 to 30 (-16.1 to -1.1), factory set at 12 (-11.1) | 3/8 in. x 3 in. 6 ft Cap. |
| A70HA-1C¹ | Close Low | Open Low | 15 to 55 (-9.4 to 12.8) | 400 (204.4) | Screwdriver slot | Manual reset | 20 ft of 1/8 in. O.D. Tubing |
| A70HA-2C | Close Low | Open Low | 35 to 80 (1.7 to 26.7) | 250 (121) | Screwdriver slot | Manual reset | 3/8 in. x 3 in. 6 ft Cap. |
| A70HA-14C | Close Low | Open Low | 15 to 55 (-9.4 to 12.8) | 400 (204.4) | Screwdriver slot | Manual reset | 20 ft of 1/8 in. O.D. Tubing |
| A70KA-1C | Close High | Open High | 100 to 170 (37.8 to 76.7) | 240 (116) | Screwdriver slot | Manual reset | 3/8 in. x 3 in. 6 ft Cap. |
