Finding the Red Keycard and both Industrial Fuses is one of the biggest progression hurdles in No More Room in Hell 2's Raven Rock map. The keycard opens the route through Sector A, while the two Industrial Fuses are required to repair the Substation power circuit and start the generator.
The important catch is that item locations can vary between matches, so you should treat the locations below as reliable areas to search rather than guaranteed coordinates.
This guide covers where to look for the Red Keycard, both Industrial Fuses, how to use them, and what to do if you cannot find them.
Table of Contents
- ➜ Raven Rock Keycard & Fuse Locations at a Glance
- ➜ Where to Find the Red Keycard
- ➜ How to Use the Red Keycard
- ➜ Where to Find Industrial Fuse #1
- ➜ Where to Find Industrial Fuse #2
- ➜ How to Repair the Substation Power Circuit
- ➜ What to Do If You Cannot Find a Keycard or Fuse
- ➜ Best Squad Strategy for Searching Raven Rock
- ➜ Common Keycard & Fuse Mistakes
- ➜ Raven Rock Keycard & Fuse FAQ
- ➜ Final Tips for Raven Rock
Raven Rock Keycard & Fuse Locations at a Glance
| Item | Where to Search | Purpose |
|---|---|---|
| Red Keycard | Sector A administrative/security areas | Opens the required security access |
| Industrial Fuse #1 | Sector C maintenance/supply areas | Repairs the Substation circuit |
| Industrial Fuse #2 | Sector C lower maintenance/flooded areas | Repairs the Substation circuit |
| 2 Industrial Fuses | Sector C | Required to start the Substation Generator |
Where to Find the Red Keycard
The Red Keycard is found after entering the B1 section and reaching the Sector A administrative area.
Look through the offices, security desks, cubicles, and nearby work areas for the red access card.
Red Keycard Search Route
After opening the B1 Blast Door:
- Enter Sector A.
- Search the administrative offices and security areas.
- Check desks and nearby surfaces carefully.
- Look for the distinctive red keycard.
- Pick it up and continue toward the locked security access point.
Spawn warning: The exact location can vary between matches.
The most important thing is not to search only one particular desk. If the card isn't where you expect it to be, thoroughly check the surrounding office area.
How to Use the Red Keycard
The process is straightforward:
- Find the Red Keycard in Sector A.
- Carry it to the locked security access point.
- Interact with the card reader.
- Allow the security door to unlock.
- Continue toward Sector B.
If the reader says that clearance is required, you probably haven't found the correct keycard yet.
Where to Find Industrial Fuse #1
After progressing through Sector B and reaching the lower industrial areas, Raven Rock's next major blocker is the Substation power circuit.
The generator cannot be started until you find two Industrial Fuses.
The first fuse can be found somewhere within the Sector C maintenance/supply areas.
Fuse #1 Search Area
Start by checking:
- Maintenance rooms
- Supply areas
- Shelving
- Open storage crates
- Workbenches
- Utility rooms
In the observed route, the first Industrial Fuse was found inside a green metal supply crate on a storage shelf.
Spawn warning: The exact container or shelf can vary between matches.
If you enter Sector C and don't immediately see the fuse, don't assume it isn't there. Search the surrounding maintenance rooms and storage spaces before moving deeper into the complex.
Where to Find Industrial Fuse #2
The second Industrial Fuse is also located in Sector C, but you may need to travel farther into the lower maintenance areas.
Search the:
- Lower utility corridors
- Maintenance rooms
- Storage crates
- Tool carts
- Shelving
- Flooded or partially flooded passages
In the observed route, the second fuse was found near a lower maintenance/flooded passage, resting around the area's storage equipment.
Spawn warning: The exact crate or surface can vary between matches.
One of the easiest mistakes is finding one fuse and assuming the second one will be nearby. It may not be. Once you've found the first fuse, continue searching deeper into the Sector C maintenance network until you have both.
How to Repair the Substation Power Circuit
Finding the fuses is only half the puzzle.
Once you have both:
- Return to the Substation Generator area.
- Locate the generator's power control panel.
- Insert the first Industrial Fuse.
- Insert the second Industrial Fuse.
- Confirm that both fuse slots are filled.
- Interact with the generator starter.
This completes the REPAIR SUBSTATION POWER CIRCUIT objective.
After the circuit is repaired, the generator can be started.
Don't immediately pull the starter. Starting the Substation Generator creates a major zombie threat, so your squad should prepare first.
Before activating it:
- Reload every firearm.
- Heal wounded teammates.
- Check ammunition.
- Make sure everyone knows where the escape route is.
- Position teammates near defensible entrances.
- Keep your strongest close-range weapons ready.
- Avoid having one player separated deep inside a side room.
Once the generator starts, the resulting noise attracts zombies and can turn the area into a dangerous close-quarters fight.
What to Do If You Cannot Find a Keycard or Fuse
If an objective item isn't where you expect it to be, don't immediately assume the match is bugged. Raven Rock's important loot should be approached as an area search rather than a single-coordinate search.
If the Red Keycard Is Missing
Search:
- Sector A offices
- Security desks
- Office cubicles
- Shelves
- Counters
- Nearby administrative rooms
The biggest mistake is checking one desk and leaving.
If an Industrial Fuse Is Missing
Search the entire relevant Sector C maintenance section.
Check:
- Open crates
- Shelves
- Tool carts
- Workbenches
- Utility rooms
- Lower corridors
- Flooded maintenance areas
Still Can't Find It?
Have two squad members search different branches while maintaining enough distance to respond if a horde appears. Avoid sending one player completely alone into the deeper tunnels.
Best Squad Strategy for Searching Raven Rock
Raven Rock becomes much easier when the squad divides responsibilities without completely splitting up.
1. Keep a Search Pair Together
Two players can search while the other two cover nearby corridors. This gives the squad enough coverage without creating isolated targets.
2. Call Out Every Item
When someone finds a fuse or keycard, communicate its location immediately. This prevents another player from wasting time searching the same rooms.
3. Don't Ignore Containers
Important objective items aren't necessarily sitting in the middle of a room.
Check:
- Crates
- Shelves
- Desks
- Workbenches
- Tool carts
- Storage areas
4. Return as a Group
Once both fuses are collected, regroup before returning to the generator. The generator activation is one of the most dangerous transitions in the map.
5. Prepare for the Next Objective
After starting the generator, your squad will eventually need to retrieve and transport the Heavy Radio Transponder. Don't burn all your ammunition and healing items searching for the fuses.
Common Keycard & Fuse Mistakes
Mistake #1: Treating One Desk as the Keycard Spawn
Problem: You search one desk and conclude the Red Keycard isn't present.
Fix: Search the wider Sector A administrative/security area.
Mistake #2: Searching Only the Generator Room for Fuses
Problem: The generator tells you that components are missing, but you can't find them.
Fix: Leave the generator room and thoroughly search the Sector C maintenance and storage areas.
Mistake #3: Finding One Fuse and Stopping
Problem: One Industrial Fuse is installed, but the generator still won't start.
Fix: You need two Industrial Fuses.
Mistake #4: Starting the Generator Immediately
Problem: The squad gets overwhelmed as soon as the generator starts.
Fix: Reload, heal, regroup, and establish defensive positions before activating it.
Mistake #5: Splitting the Squad Too Far Apart
Problem: One player finds a fuse but gets overwhelmed before the others can reach them.
Fix: Search in pairs or maintain clear lines of communication between squad members.
Raven Rock Keycard & Fuse FAQ
Where is the Red Keycard in Raven Rock?
The Red Keycard can be found in the Sector A administrative/security area. Search desks, cubicles, security stations, and nearby surfaces. The exact spawn can vary between matches.
What is the Red Keycard used for?
The Red Keycard is used at the appropriate security door reader to unlock the next section of Raven Rock and continue toward Sector B.
How many Industrial Fuses are needed in Raven Rock?
You need two Industrial Fuses to repair the Substation power circuit.
Where are the Industrial Fuses?
Both are found in the broader Sector C maintenance and utility areas. Search supply crates, shelves, work areas, and lower maintenance corridors. Exact item positions can vary.
Can Industrial Fuse locations change?
Yes. Treat the locations described in this guide as search areas rather than guaranteed static spawns.
Why won't the Raven Rock generator start?
If the generator cannot be activated, make sure both Industrial Fuses have been installed into the Substation power panel.
Should I start the generator as soon as I find both fuses?
No. Reload, heal, regroup, and establish defensive positions first. Generator activation creates a significant zombie threat.
What comes after the Industrial Fuses?
After repairing and starting the Substation Generator, the squad progresses toward Sector D Silo, retrieves the Heavy Radio Transponder, and eventually carries it to the Cargo Lift for extraction.
Final Tips for Raven Rock
The key to Raven Rock's item hunt is searching the correct area rather than memorizing one supposedly permanent spawn.
- Red Keycard: Search Sector A administrative/security areas.
- Industrial Fuse #1: Search Sector C maintenance and supply areas.
- Industrial Fuse #2: Search deeper Sector C utility/maintenance areas.
- Need two fuses: Both are required for the Substation circuit.
- Before generator activation: Reload, heal, and regroup.
- Don't search alone: Raven Rock's tight corridors make isolated players easy targets.
Once the Substation is powered, you're through one of Raven Rock's biggest progression blockers—but the map's most dangerous objectives are still ahead.
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