A breaker block is what an order block becomes when it fails. The institutions defending the OB get overwhelmed, price breaks through, and the same zone — now from the other side — becomes opposite-polarity support. ICT teaches that breaker retests are some of the highest-edge entries in the framework because they confirm the regime change while still giving a defined-risk entry.
Below is the breaker block MT4 indicator that auto-detects polarity-flipped order blocks after Break of Structure, the retest strategy I trade live, and how it differs from a fresh order block.
What is a Breaker Block?
A breaker block is a 3-step pattern:
- An order block forms (last opposing candle before impulse)
- Price moves away from the OB, then comes back and BREAKS through it (Break of Structure / BOS)
- Price retraces back to the now-broken OB, where the zone acts as opposite-polarity S/R
For example: a bearish OB forms (last bullish candle before bearish impulse). Price falls, then rallies back UP and closes above the OB high (BOS). The OB is no longer bearish supply — it’s now bullish support. When price retraces down to retest, expect a bounce.
The institutional logic: when the OB gets violated, the institutions defending it stop out. Their positions flip — they’re now on the other side. When price returns to the zone, those flipped positions defend the new direction.
The “BOS confirmation” step is critical. Without a BOS, you don’t have a breaker — you just have a tested OB. Our indicator only flags zones where price has explicitly broken through.
How Breaker Blocks Work on MT4
Our FOB_BreakerBlock.ex4 scans the last 200 bars (configurable), identifies historical order blocks, then checks if price subsequently broke through them. Confirmed breakers are drawn as coloured rectangles in opposite polarity to the original OB.
Three patterns matter for forex traders.
The first is breaker retest. The cleanest setup. After BOS, wait for price to return to the breaker zone and trade the bounce in the new direction.
The second is breaker stack. Multiple breakers at different prices in the same direction = strong structural shift. If price has flipped 2-3 OBs in a row, the trend change is well-established.
The third is breaker + FVG confluence. A breaker block that aligns with a FVG at the same price = double-edge entry. The breaker confirms regime change; the FVG provides precise entry zone.
Key Features
- Custom MT4 indicator (FOB_BreakerBlock.ex4)
- Auto-detection of polarity-flipped order blocks after BOS
- Configurable lookback (default 200 bars)
- Configurable impulse threshold (ATR multiplier)
- Bullish breakers (green) + bearish breakers (red)
- Coloured rectangles extend forward to current price
- Non-repainting once BOS is confirmed
Best Settings for Breaker Block Indicator
The defaults work for most pairs.
| Use Case | Lookback | Impulse ATR | Best Timeframe |
|---|---|---|---|
| Day Trading | 200 | 1.5 | H1 |
| Swing | 300 | 2.0 | H4 |
| Position | 500 | 2.5 | D1 |
Recommended starting point: H1 EURUSD with 200-bar lookback, 1.5x ATR threshold.
Pros and Cons
| Pros | Cons |
|---|---|
| Confirms regime change before entry — higher edge than fresh OBs | Custom install required — not built into MT4 |
| Defined risk (stop beyond breaker extreme) | Less frequent than fresh OBs — patience required |
| Pairs with FVG and Market Structure for ICT confluence | Requires understanding of BOS — less beginner-friendly |
| Works on all forex pairs and timeframes | Best on H1+ — too noisy on M5 for retail traders |
How to Install Breaker Block Indicator on MT4
The Breaker Block indicator is custom. See install custom indicators on MT4.
Step 1: Download FOB_BreakerBlock.ex4 from the form below.
Step 2: MT4 > File > Open Data Folder > MQL4 > Indicators. Drop the .ex4 in.
Step 3: Restart MT4 (or refresh Navigator).
Step 4: Drag FOB_BreakerBlock onto your H1 chart with default settings.
Step 5: Save as a chart template (“Breaker-H1”) for one-click reuse.
Trading Strategy: Breaker Retest
The cleanest breaker strategy. Best on H1 EURUSD, GBPUSD, gold during London/NY sessions.
Setup: FOB_BreakerBlock + 50 EMA on price.
Long Entry (bullish breaker retest):
1. H4 trend has just shifted from down to up (BOS confirmed visually or via market structure indicator)
2. On H1, identify a fresh bullish breaker (former bearish OB, now flipped to support)
3. Wait for price to retrace down to the breaker zone
4. Enter long when price prints a bullish rejection candle at the breaker
5. Stop loss 5-10 pips below the breaker low
6. Take profit at the next major resistance
Short Entry (bearish breaker retest):
1. H4 trend just shifted from up to down (BOS down)
2. Identify fresh bearish breaker (former bullish OB, now flipped to resistance)
3. Retracement up to breaker
4. Bearish rejection candle at breaker
5. Enter short on rejection close
6. Stop loss above breaker high
7. Take profit at next major support
The discipline that matters: only trade fresh breakers (first retest). Subsequent retests have meaningfully lower hit rates.
Breaker Block vs Order Block
Same source data; different state.
| Feature | Breaker Block | Order Block |
|---|---|---|
| State | Violated by BOS, polarity-flipped | Fresh, untouched |
| Direction | Opposite of original OB | Same as institutional positioning |
| Trade context | Trade WITH the new trend after BOS | Trade with the original trend |
Verdict: Use fresh OBs to trade established trends; use breakers to trade regime changes. Both are essential ICT tools.
Frequently Asked Questions
Is the Breaker Block indicator free?
Yes. Our FOB_BreakerBlock.ex4 is free below.
Does the indicator repaint?
No. Breakers are confirmed only after BOS occurs (price closes through the OB). Once confirmed, the breaker is locked.
What’s the difference between a breaker and a mitigation block?
Both involve OB violation. A “mitigation block” is a more general term — any OB that price has returned to. A “breaker block” specifically requires Break of Structure + polarity flip. Our indicator detects breakers strictly.
Best timeframe?
H1 and H4. Lower timeframes have too many false BOS events; daily is excellent for swing trades.
Can I use this on MT5?
Yes. Our enhanced version supports both platforms.
Download Breaker Block Indicator for MT4 – Free
Breaker Block detection isn’t built into MT4. Our free FOB_BreakerBlock.ex4 gives you:
- Auto-detection of polarity-flipped order blocks after BOS
- Configurable impulse threshold (ATR-based)
- Bullish + bearish breaker coloured rectangles
- Non-repainting — once BOS confirms, breaker is locked
Platform: MT4 (Build 1000+)
File type: .ex4
File size: 22 KB
Version: 1.0
Last updated: May 2026
Download the Breaker Block Indicator – Free Instant Access
No payment. No catch. Enter your email below and the Breaker Block Indicator file lands in your inbox within 60 seconds. Here’s everything you get:
- The non-repainting Breaker Block Indicator file (.ex4) – install in 30 seconds
- Step-by-step installation guide with chart screenshots
- Best-performing settings for day trading and swing trading
- The exact breaker retest rules I use in live trading
- Weekly trading insights from a developer with 16+ years of market experience
Download the Breaker Block Indicator – Free Instant Access
No payment. No catch. Enter your email below and the Breaker Block Indicator file lands in your inbox within 60 seconds. Here’s everything you get:
- The non-repainting Breaker Block Indicator file (.ex4) – install in 30 seconds
- Step-by-step installation guide with chart screenshots
- Best-performing settings for scalping, day trading, and swing trading
- The exact entry and exit rules Dom uses in live trading
- Weekly trading insights from a developer with 16+ years of market experience
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Overall Rating: 4.6/5
| Category | Rating |
|---|---|
| Accuracy | 4.6/5 |
| Ease of Use | 4.4/5 |
| Features | 4.7/5 |
| Value | 4.8/5 |
Related Indicators
- Order Block Indicator MT4 – Fresh OB detection (the originating concept)
- Market Structure MT4 – BOS/CHoCH detection that confirms breakers
- FVG Indicator MT4 – Pairs with breakers for ICT confluence
- best ICT indicators for MT4 – The full ICT toolkit
Trading forex involves significant risk of loss and is not suitable for all investors. Past performance is not indicative of future results. The indicators provided on ForexOBroker are for educational purposes only. Always use proper risk management and never trade with money you cannot afford to lose.
