HHS4 Series time relays are used where a control circuit needs delayed switching after power-on, release, momentary contact or power failure. The models share the same contact capacity, operating environment and mounting choices, while the timing range and contact arrangement differ by relay type.
Common Parameters
| Operating power | AC380V, AC220V, AC127V, AC110V, AC36V, AC24V, 50Hz; DC24V |
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| Contact capacity | 3A AC250V resistive load |
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| Temperature range | -5°C to 40°C |
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| Altitude | ≤2000m |
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| Humidity | ≤50% RH at 40°C; higher humidity permitted at lower temperatures, such as 90% RH at 20°C, with protection against condensation |
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| Installation | Device type or rail type |
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| Conventional heating current Ith | 5A |
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| Rated insulation voltage Ui | 400V |
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| Rated impulse withstand voltage Uimp | 2.5kV |
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| Utilization category | AC-15, AC250V / 3A |
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HHS4
HHS4 covers the standard power-on delay, momentary-contact delay and release-delay versions.
| Variant | Operating mode | Delay range | Contacts |
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| HHS4 | Power-on delay | 0.1s-1s, 0.5s-5s, 1s-10s, 3s-30s, 6s-60s, 12s-120s, 18s-180s, 30s-300s, 60s-600s, 90s-900s, 120s-1200s, 180s-1800s, 360s-3600s | 2 delayed changeover contacts |
| HHS4C | Power-on delay with momentary contact | 1 delayed changeover contact with reset/pause |
| HHS4G | Release delay | 2 delayed changeover contacts |
| HHS4PA | Power-on delay | 0.1s-99h | 2 delayed changeover contacts, or 1 delayed plus 1 instantaneous changeover contact |
| Repeat error | Er <1% above 1s; Dr <50ms below 1s |
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HHS4P
| Operating mode | Power-on delay |
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| Delay range | 0.01s-0.99s, 0.1s-9.9s, 1s-99s, 0.1s-99.9s, 1s-999s, 0.1m-9.9m, 1m-99m, 1h-99h |
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| Contacts | 2 delayed changeover contacts, or 1 delayed plus 1 instantaneous changeover contact |
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| Repeat error | Er <1% above 1s; Dr <50ms below 1s |
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HHS4PF
| Operating mode | Power-failure delay |
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| Delay range | 0.1s-9.9s, 1s-99s, 1s-199s |
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| Contacts | 2 delayed changeover contacts |
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| Repeat error | Er <5% above 1s; Dr <100ms below 1s |
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