Carlo Gavazzi DCB51 Asymmetrical Recycler Timer

Ultra-slim 17.5 mm DIN asymmetrical recycler with independently set ON and OFF times from 0.1 s to 100 h — choose ON-first or OFF-first by a jumper, multi-voltage supply, and 5 A SPDT output.

Key advantages

• Asymmetrical recycle — Separate T1/T2 knobs so ON and OFF periods need not match.
• Aa / Ab modes — ON first (no A1–Y1 link) or OFF first (jumper A1–Y1).
• 0.1 s…100 h — Seven knob ranges for each time channel.
• Multi-voltage — 24 VDC and 24–240 VAC on DCB51CM24.
• Mini-D housing — 17.5 × 81 × 67.2 mm DIN; UL/CSA; ≤0.2% repeatability.

Typical applications

• Pulsed pumps, heaters, or solenoids with unequal ON/OFF duty.
• Flashing beacon or alarm cadence control.
• Compact DIN panels where 22.5 mm timers are too wide.
• Automatic-start recycle sequences after power apply.

Selection guide

• Mode — Wire A1–Y1 only when OFF-first (Ab) is required.
• T1 vs T2 — Assign the longer period to the correct knob pair.
• Supply — Confirm DCB51CM24 covers your control voltage.
• Contact load — 5 A AC1; use AC15/DC13 figures for inductive loads.

Common mistakes

• Leaving the A1–Y1 jumper when you wanted ON-first — mode will invert.
• Setting both knobs to the same range and expecting a symmetrical recycler — use a dedicated symmetrical model if equal times are all you need.
• Ignoring ≥200 ms supply interrupt for reset.
• Oversizing inductive loads past the 2.5 A AC15 rating.

When to RFQ / what to tell us

1. Confirm DCB51CM24; quantity; ship-to.

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Specs

Documents

• DCB51 datasheet (PDF)

FAQ

Q: How do I pick ON-first vs OFF-first? A: No link on A1–Y1 = Aa (ON first). Jumper A1–Y1 = Ab (OFF first).

Q: Can ON and OFF times differ? A: Yes — that is the asymmetrical recycler purpose; each has its own range and fine knob.

Q: What should I send for a quote? A: Confirm DCB51CM24, quantity, ship-to.

Links

• Timers
• Request a Quote · Get selection help